How to Learn Advanced English Vocabulary (Chinese Edition) | Lesson No.026 | Control Lexical Density and Information Load Without Making English Heavy | 第026课：控制词汇密度与信息负荷，但避免英语变得拥挤难读

Series ID: EDKS-ADV-VOC-ZH-0026 · Advanced English Vocabulary (Chinese Edition) · Lesson No.026 · Batch 07 · C1 → C2 · 简体中文辅助

Advanced English is not the maximum amount of information you can fit into one sentence. It is the amount your reader can recover accurately without unnecessary effort.
高级英语不是“每句话塞进最多信息”。高级英语是：在不让读者付出不必要解码成本的前提下，把足够的信息准确送达。

Compare two versions:

Dense: The post-intervention vocabulary retrieval performance variability reduction suggests improved learner response consistency.

Expanded: After the intervention, learners’ vocabulary retrieval scores varied less. This suggests that their responses became more consistent.

The first sentence is not necessarily “more advanced”. It is more compressed. Several relations—time, possession, measurement, comparison and interpretation—are packed into one noun-heavy structure. The second version uses more words but makes those relations easier to recover.

这就是本课要解决的问题：当词汇量越来越大、专业术语越来越多、名词化越来越熟练以后，学习者很容易开始过度压缩。句子每个词都“高级”，但整句越来越难读。

Linguistic research helps explain why. Douglas Biber and Bethany Gray’s work on academic English shows that modern academic prose is characterised by dense phrasal structures—especially heavily modified noun phrases—rather than simply by long subordinate clauses. Their analyses describe academic writing as increasingly compressed. More recent Cambridge research on CEFR text difficulty defines lexical density as the proportion of content words in a text and notes that higher lexical density generally means greater information density and greater processing demand for L2 readers.

Compression is not bad. Academic and professional writers need it. Technical terms allow experts to package large concepts efficiently. Noun phrases can connect information compactly. But Biber and Gray also show that compressed phrasal structures can make semantic relationships less explicit. The advanced learner therefore needs two abilities at once:

• Compression: package information efficiently when reader knowledge allows it.
• Expansion: unpack hidden relationships when clarity requires it.

Density is a resource, not a score.

词汇密度是一种资源，不是分数。越高不代表越好。

This lesson owns the Mandarin-supported C1–C2 route for controlling lexical density and information load. It does not replace Lesson No.016 on nominalisation, Lesson No.018 on lexical bundles, Lesson No.021 on lexical cohesion, or the adjacent Advanced English lesson on adapting complex English for different audiences. Here the specific problem is: how densely should vocabulary and concepts be packaged in one sentence, paragraph or spoken turn?

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1. Lexical density is not vocabulary difficulty | 词汇密度不等于“用了多少难词”

Lexical density is commonly described as the proportion of content words—nouns, lexical verbs, adjectives and many adverbs—relative to the total amount of language. A sentence can therefore be lexically dense even when none of its words is rare.

Rapid price changes create serious market instability.

The words are not especially exotic, but most carry substantive information.

2. Lexical density is not lexical diversity | 词汇密度与词汇多样性也不是一回事

Density asks how much informational vocabulary is packed into the text. Diversity asks how varied the vocabulary is. A paragraph can repeat a few high-value technical terms and still be dense. Another can use many different words while remaining relatively conversational.

不要把“词不重复”当成“密度高”。Lesson No.021 已经说明，重复关键术语可能反而更清楚。

3. Information density is the practical learner concept | 对学习者来说，更重要的是 information load

A sentence becomes difficult when too many new relationships must be recovered at once:

• new terminology;
• new causal relationship;
• new comparison;
• new time relationship;
• new stance;
• new category structure;
• several embedded modifiers.

The reader’s problem is not simply word count. It is the number and explicitness of relationships.

4. Academic English often compresses information into phrases | 学术英语常把原本可以用句子表达的关系压进短语

Biber and Gray describe modern academic prose as making extensive use of:

• attributive adjectives;
• nouns used before other nouns;
• prepositional phrases modifying nouns;
• appositive noun phrases;
• nominalisations.

These devices can package large amounts of information efficiently.

5. Compression is useful because experts share background | 为什么专家文本可以更密？因为很多关系已经不用重新解释

An expert reader may process short-term memory retrieval performance quickly because the conceptual categories are already familiar.

A novice may need:

how well learners can retrieve information from short-term memory

Same broad concept, different packaging.

6. Reader knowledge changes acceptable density | 合适密度取决于读者知道多少

Audience	Typical need
Beginner	more definitions, explicit clauses, examples
Educated general reader	moderate compression with clear terminology
Professional peer	shared terms can carry more information
Specialist	high technical density may be efficient

7. Density is therefore audience-relative | “太密”不是绝对属性

A sentence can be elegant for a specialist and opaque for a parent. Do not judge density without identifying the reader.

8. First mention and later mention can have different density | 同一概念第一次出现与第五次出现，可以用不同密度

First mention:

Retrieval practice is a learning activity in which learners try to recall previously studied information without simply rereading it.

Later:

Retrieval practice improved delayed recall.

Once the concept is established, compression becomes cheaper for the reader.

9. Define once, compress later | 一个高效原则：先展开建立概念，再压缩使用

This is especially useful for technical terms. Do not repeatedly re-explain a stable concept, but do not compress before the reader has built it.

10. Nominalisation raises density quickly | 名词化是最常见的信息压缩器之一

Expanded:

When the team implemented the new process, response time improved.

Compressed:

Process implementation improved response time.

The second is shorter and denser. It also removes explicit agency and timing.

11. Lesson No.016 tells you whether nominalisation is grammatically useful | 本课再问一步：一段里有多少名词化，读者还能轻松恢复关系？

You may have five individually legitimate nominalisations that collectively overload one sentence.

12. Noun stacks are density multipliers | 名词串会迅速提高信息负荷

student vocabulary retrieval performance improvement programme evaluation criteria

The reader must infer the hidden relationships among seven nouns.

13. Expand noun stacks to reveal relationships | 拆开以后，看隐藏关系

criteria for evaluating a programme designed to improve students’ vocabulary retrieval performance

The expanded form is longer but more explicit.

14. Then recompress only the conventional parts | 再把已经稳定、常见的部分压回去

criteria for evaluating a vocabulary-retrieval programme

Compression becomes an editing decision, not an automatic preference.

15. Established noun compounds are easier than invented ones | 固定术语可以很密；临时拼出来的名词串风险更高

• credit risk;
• market liquidity;
• working memory;
• response time;
• formative assessment.

These are conventional concepts. A reader familiar with the field processes them as units.

16. Invented compounds require relationship recovery | 临时名词组合越长，越要检查关系是否可恢复

learner feedback response delay analysis

Does this mean analysis of learner feedback about response delay? Analysis of delay in learners’ response to feedback? The phrase is grammatically possible but semantically unstable.

17. Prepositions can make dense relations explicit | 一个介词有时能省读者五秒猜测

analysis of delays in learners’ responses to feedback

18. Clauses can make agency and causality explicit | 从名词短语退回 clause，有时信息反而更容易读

After teachers delayed the feedback, learners revised less accurately.

Actor, sequence and result are explicit.

19. Lexical density can rise while sentence length falls | 短句也可以非常密

High-stakes assessment validity concerns remain.

Only five words, but several conceptual relationships are compressed.

20. Long sentences can be relatively easy if relations are explicit | 长句不一定比短句难

Although the assessment is used in a high-stakes context, researchers still disagree about whether it measures the intended ability consistently across different groups.

The sentence is longer, but conjunctions and clauses expose the logic.

21. Do not edit by sentence length alone | 可读性不能只看“每句多少词”

Check relation density, technical novelty and modifier load.

22. Content words carry information, but function words often carry relationships | 小词不是“废词”

Prepositions, conjunctions, pronouns and auxiliaries may lower lexical-density ratios while making relationships more explicit.

Therefore, maximising the percentage of nouns, verbs, adjectives and adverbs is not a writing goal.

23. High lexical density can increase L2 processing demand | 对第二语言读者尤其如此

Recent Cambridge work aligning linguistic complexity with CEFR text difficulty explicitly treats higher lexical density as greater information density and potentially greater cognitive processing demand.

24. Density should rise with reader readiness | 读者知识越稳定，压缩空间越大

This is one reason advanced textbooks can become denser across chapters: terminology and concepts have already been established.

25. New concept + new term + dense syntax is a triple load | 最危险的组合：新概念、新术语、新结构同时出现

If all three are necessary, slow the text down with an example or explanation.

26. Use the “one major novelty at a time” heuristic | 一个实用启发式：每一句最好只让一个维度承担主要新颖度

This is not a scientific rule. It is an editing heuristic.

• If the concept is new, keep syntax familiar.
• If the terminology is technical, explain the relationship explicitly.
• If the structure is highly compressed, use familiar concepts.

27. Technical terminology can lower total explanation cost | 一个精准术语，有时比十个普通词更省力

Once defined, external validity may be more efficient than repeatedly writing “whether the finding applies to people and settings beyond those studied”.

28. But unexplained jargon transfers cost to the reader | 术语没有共享背景时，只是把工作扔给读者

Dense expert vocabulary is efficient only when meanings are available to the audience.

29. Jargon density and lexical density are different | 行话多 ≠ 词汇密度高；词汇密度高也不一定行话多

A general-interest essay can be lexically dense without specialist terminology. A technical document can contain a few highly specialised terms inside otherwise simple clauses.

30. Use definitions as decompression valves | 定义是最重要的“减压阀”之一

Latency—the delay between a request and a system’s response—increased during peak load.

The apposition briefly expands the technical term.

31. Use examples as decompression | 例子把抽象密度变成可观察场景

Abstract:

High lexical density can increase processing demand.

Example:

A beginner may understand the words response, delay, system separately but struggle with peak-load response-delay mitigation strategy because several relationships must be inferred at once.

32. Use contrast as decompression | 对比可以迅速解释两个密集概念

Latency measures delay; throughput measures how much work is processed over time.

33. Use parenthetical definitions selectively | 括号/破折号定义有用，但不要每句插三层

Too many embedded explanations produce their own kind of density. If a concept requires several sentences, give it several sentences.

34. Use lists when the reader must hold parallel items | 并列信息多时，列表可以降低句法负担

Do not force six categories into one comma-heavy sentence if a list preserves the relationships better.

35. Use tables when comparison structure matters | 多维比较可以从 prose 转成 table

A table can lower linguistic density by making the structure visual. The conceptual complexity remains, but the reader does not need to recover every relation from syntax.

36. Use lexical bundles to make dense relationships predictable | 熟悉框架可以让高信息句更容易处理

• the extent to which…;
• one possible explanation is…;
• a key limitation is…;
• the evidence suggests that…

Lesson No.018’s recurrent frames reduce structural uncertainty while content remains dense.

37. But too many frames can create another kind of clutter | 框架也会占加工空间

Do not stack it is important to note that it should be emphasised that one possible explanation may perhaps be…

38. Stance words add information too | may / probably / clearly 也是信息负荷的一部分

They tell the reader how strongly to interpret the proposition. Remove them only if the stance is truly unnecessary.

39. Dense sentences need strong cohesion | 信息越密，越需要清楚知道“我们还在谈什么”

Lesson No.021’s anchor terms become especially important when surrounding information is compressed.

40. Do not vary technical terms inside dense prose | 高密度环境里随便换同义词，会增加额外判断

If working memory is the term, repeat it. The reader already has enough to process.

41. Old information should carry new information | 句子最好让已知信息成为新信息的支架

Example:

The study measured retrieval accuracy. This accuracy measure was then compared across three feedback conditions.

The repeated concept gives the reader a stable starting point.

42. Avoid introducing five new nouns at sentence start | 句首如果同时出现五个新概念，读者没有支架

Consider breaking the information into a short sequence.

43. Use sentence pairs to distribute load | 两句并不一定比一句“不高级”

The intervention reduced error rates. The reduction was largest among learners who received immediate feedback.

Two sentences allow the second claim to build on the first.

44. Compression can hide causality | 关系被压进名词串以后，谁导致谁可能不清楚

staff reduction response-time deterioration

Expanded:

When staffing was reduced, response times became slower.

45. Compression can hide agency | 谁做的，也容易在高密度名词化里消失

The failure to submit the report caused a delay.

If responsibility matters:

The contractor failed to submit the report, which delayed the review.

46. Compression can hide sequence | 时间顺序也可能被抽象名词吞掉

Following review completion, implementation commencement preceded monitoring initiation.

Clearer:

After the team completed the review, it implemented the change and then began monitoring the results.

47. Compression can hide attribution | 谁认为这件事，也可能被压掉

the likely explanation

Likely according to whom? A source? The writer? A model? Expand when attribution matters.

48. Compression can hide uncertainty | 抽象名词看起来很稳，证据其实可能很弱

The effect presupposes there is an effect. If the result is uncertain, the possible effect or a clause may be more accurate.

49. Expansion is not “dumbing down” | 把关系展开，不代表把思想变简单

You can preserve a sophisticated concept while making its internal logic explicit.

50. Compression is not “making it academic” | 句子变密，也不自动变学术

Academic prose often uses compressed structures, but good academic prose also needs readers to reconstruct the intended relationship correctly.

51. Density interacts with lexical sophistication | 难词与密度是两个维度

A sentence can be:

• low density + simple vocabulary;
• high density + simple vocabulary;
• low density + specialised vocabulary;
• high density + specialised vocabulary.

The fourth condition usually demands the most from readers.

52. Rare vocabulary is not a density strategy | 生僻词不会自动让信息包装更有效

If a rare word requires the reader to stop, it may increase difficulty without increasing useful information.

53. Choose precise common words before rare decorative words | 高级信息设计的第一选择仍然是精准

Use, show, cause, change, limit can be excellent when they exactly match the relationship.

54. Lexical density ratios are diagnostics, not targets | 即使你计算 lexical density，也不要把百分比当成绩

A numerical ratio can help compare texts, but it cannot tell you whether the density is appropriate for your audience, genre or concept.

55. A text can be dense and excellent | 高密度不是错误

Expert scientific abstracts, legal definitions and technical specifications may need compact information packaging.

56. A text can be dense and unreadable | 高密度也可能只是作者没有展开关系

The diagnostic question is whether the intended reader can recover the structure accurately and efficiently.

57. A text can be sparse and vague | 低密度也不一定清楚

There are a lot of things that make this kind of thing difficult.

Easy words, low precision.

58. The target is recoverable precision | 真正目标：precision that can be recovered

Say exactly enough, package efficiently, signal relationships clearly.

59. Written English tolerates more compression than spontaneous speech | 写作通常比即时口语更能承受高密度

Readers can pause and reread. Listeners cannot easily scan backward. Spoken English therefore often uses more clauses, pronouns, interactional frames and repetition.

60. Academic speaking is not an article read aloud | 学术口语应该适当解压

Written:

The post-intervention reduction in response variability indicates increased performance stability.

Spoken:

After the intervention, the responses varied less. In other words, performance became more stable.

61. Presentations need information waves | 演讲信息最好一层一层送，而不是一次全部压进去

1. Claim.
2. Explanation.
3. Example/data.
4. Implication.

62. Meetings need operational clarity | 工作会议的“高级”通常是快速恢复责任、条件与下一步

Dense:

Approval-dependent implementation sequencing remains the primary schedule constraint.

Meeting-ready:

The main schedule constraint is approval. We cannot implement the next stage until approval is complete.

63. Emails usually benefit from moderate density | 邮件需要效率，但不需要每句像摘要

Use technical terms when shared, then state the action clearly.

64. Exam essays need density control too | 考试写作不是把高级词塞到句子上限

One precise relation, one clear example and controlled lexical range usually outperform an overloaded sentence whose logic is difficult to follow.

65. Creative nonfiction can vary density for rhythm | 信息密度也能成为文体节奏

A dense analytical sentence may be followed by a short plain sentence. Density variation can guide attention.

66. Mandarin and English package information differently | 中文与英语的信息包装方式不同，直译密集名词结构尤其危险

Do not assume that a compact Chinese noun sequence should become an equally compact English noun sequence. Translate the relationships first:

学生词汇提取表现提升方案评估

Possible relational expansion:

an evaluation of a programme designed to improve students’ vocabulary retrieval performance

Only after the relationship is clear should you decide what can be compressed.

67. Translate relations before nouns | 中文→英文高级写作：先问词之间是什么关系

• purpose?
• cause?
• ownership?
• measurement?
• time?
• category?
• part–whole?

68. Then select the English packaging | 关系确定以后，再决定 noun phrase / clause / preposition / compound

69. Use the expansion test | 最强密度诊断之一：你能不能把这句话展开？

Take a dense sentence and rewrite it with explicit actors, actions, conditions and logical relationships.

If you cannot expand it confidently, you may not fully understand your own compressed wording.

70. Use the recompression test | 展开以后，再看哪些部分可以安全压回去

This prevents both extremes: bureaucratic density and childish over-explanation.

71. Use the novice paraphrase test | 如果普通读者问“这句话什么意思”，你能不能快速解释？

If not, the issue may be genuine conceptual complexity—or unnecessary packaging complexity. Distinguish them.

72. Use the expert compression test | 给专业同行时，哪些解释可以删掉而不损失关系？

Advanced communication includes knowing when not to explain obvious shared knowledge.

73. Use the read-aloud test | 读出声可以暴露信息拥堵

If you repeatedly lose your place while reading your own sentence aloud, inspect noun stacks, modifiers and embedded abstractions.

74. Use the one-breath test only as an alarm | 一口气测试只能报警，不能当语法规则

Long spoken sentences may still be excellent. The test simply helps identify places where too many ideas have been compressed into one delivery unit.

75. Use the “relationship labels” test | 把句中关系写出来

For each dense phrase, label:

• of;
• for;
• by;
• because;
• after;
• which;
• that;
• in order to.

If several hidden labels are needed, expansion may help.

76. Use a density heat map | 给句子标“信息热点”

Mark:

• technical terms;
• nominalisations;
• noun compounds;
• new concepts;
• stance markers;
• numbers/statistics;
• embedded modifiers.

If one sentence contains many hotspot categories, test expansion.

77. Use a reader-knowledge map | 再标哪些词读者应该已经知道

• Shared.
• Previously defined.
• New but inferable.
• New and must explain.

78. Dense sentences should contain more shared information than new information | 一个实用原则：压缩建立在共同背景上

This is a heuristic, not a formula. Its purpose is to stop multiple unfamiliar concepts from colliding in one sentence.

79. Use the “why is this noun here?” test | 每个抽象名词都要有工作

• Does it name a real concept?
• Does it build cohesion?
• Does it allow comparison or measurement?
• Or did I choose it only because it sounds formal?

80. Use the “why is this adjective here?” test | 修饰词也会增加密度

the significant long-term operational performance improvement

Which adjectives are essential? Which relation needs a clause instead?

81. Use the “one head noun” test | 长名词短语先找真正的中心名词

Then ask what every modifier is doing to that head noun.

82. Use the “can the modifier move?” test | 有些前置修饰语应该改成后置短语或从句

Dense:

student post-course vocabulary retention performance

Expanded:

students’ vocabulary-retention performance after the course

83. Worked case: Maren “academicises” a clear paragraph | 案例一：Maren 把每个动作压成名词

Original:

We reviewed the errors, identified two recurring patterns and changed the feedback sequence. The change reduced confusion during revision.

Maren rewrites:

Error review and recurring-pattern identification enabled feedback-sequence modification and subsequent revision-confusion reduction.

Every phrase is legal-looking. The process is harder to recover.

Her tutor keeps one useful nominalisation:

We reviewed the errors and identified two recurring patterns. This review led us to change the feedback sequence, which reduced confusion during revision.

中文分析：密度控制不是“全部拆开”。保留能建立主题链的压缩，拆开隐藏动作关系的压缩。

84. Worked case: Iona writes too sparsely | 案例二：低密度也会让思想变空

Iona writes:

There are many things that can affect the result. Some things are about the people. Some things are about the test.

The sentences are easy but conceptually weak.

Revision:

Two factors may affect the result: participant characteristics and measurement quality.

The revised sentence is denser and clearer because it names the categories precisely.

85. Worked case: Leonie speaks like a research abstract | 案例三：写作密度跑进口语

In a meeting Leonie says:

“The approval-dependent implementation-sequencing constraint is the primary schedule risk.”

She revises orally:

“The main schedule risk is approval. We can’t start implementation until that comes through.”

The technical concept survives. The spoken packaging changes.

86. Worked case: expert terminology helps rather than hurts | 案例四：有时密度正是专业效率

Two engineers both understand latency, throughput, failover, redundancy. Replacing those terms with long plain-English explanations would slow the discussion. Shared terminology lowers communication cost.

中文分析：世界级沟通不是永远“写简单”。它是把复杂度放在最有价值的位置。

87. The FENCE density-control system | FENCE 信息密度控制系统

Fence	Question	Action
F0 Concept	What information must survive?	state proposition plainly
F1 Reader	What does the audience already know?	map shared knowledge
F2 Package	Term, phrase, clause or sentence?	choose structure
F3 Load	How many new relations are compressed here?	density heat map
F4 Signal	Are cause/time/agency/stance explicit enough?	restore markers
F5 Cohesion	Can the reader track anchor concepts?	repeat stable terms
F6 Expand	Can I unpack the sentence accurately?	expansion test
F7 Compress	What can safely be repackaged?	recompression
F8 Transfer	How should density change across audience/register?	rewrite/speak

88. Build a density-control card | 建立“信息包装卡”

Field	Example
Core concept	approval delays implementation
Expert compressed	approval-dependent implementation delay
Professional written	Implementation is delayed pending approval.
Spoken	We can’t start until approval comes through.
Hidden relation	condition + time
Audience note	keep “implementation” if shared

89. A 15-minute density-editing session | 15 分钟密度编辑

Time	Task
0–3 min	Find the three densest sentences.
3–6 min	Underline technical terms/nominalisations/noun stacks.
6–9 min	Expand hidden relations.
9–12 min	Recompress only established concepts.
12–15 min	Read as target reader.

90. A 30-minute information-load workshop | 30 分钟信息负荷训练

Time	Task
0–8 min	Select 300–500 words of your own writing.
8–13 min	Mark density hotspots and reader knowledge.
13–18 min	Expand two overloaded sentences.
18–23 min	Compress two under-specified passages more precisely.
23–27 min	Rewrite one sentence for a novice and expert.
27–30 min	Read aloud and finalise.

91. A seven-day density challenge | 七天信息包装挑战

Day	Focus
1	noun stacks
2	nominalisation density
3	technical term definition→compression
4	cause/time/agency expansion
5	novice vs expert rewriting
6	written vs spoken density
7	full paragraph density audit

92. A 30-day information-density challenge | 30 天词汇密度升级

• Audit 30 dense sentences.
• Expand 20 noun stacks.
• Recompress 20 expanded explanations.
• Create 15 technical-term first-mention/later-mention pairs.
• Rewrite 10 expert sentences for general readers.
• Rewrite 10 general explanations for specialists.
• Convert 10 written dense sentences into spoken versions.
• Record 20 hidden relationships exposed during expansion.

The target is not a lower density score. The target is better information packaging.

93. A 12-week progression | 12 周密度控制路线

Weeks	Focus	Evidence of progress
1–2	identify dense noun phrases	better awareness of hidden relations
3–4	expansion/recompression	more flexible packaging
5–6	reader-knowledge calibration	better first-mention definitions
7–8	technical and academic prose	efficient but recoverable compression
9–10	spoken/written transformations	less article-like speech
11–12	independent editing	density matches audience and genre

94. The first weak link diagnostic | 第一个弱点诊断

Symptom	Likely first weak link	Repair
My writing sounds academic but is hard to understand.	over-compression	expansion test
I use long noun strings.	hidden relations	restore prepositions/clauses
My prose is easy but vague.	under-specification	precise category/relationship vocabulary
Readers ask what technical terms mean.	shared-knowledge assumption	define first mention
My presentation sounds like a journal article.	register density	spoken decompression
I explain every term repeatedly.	failure to recompress	define once, reuse term
My sentence hides who did what.	nominalisation density	restore actor + verb
I calculate density but do not know what to edit.	metric misconception	relationship/load audit

95. Practice A — identify the density problem | 练习 A：问题到底在哪里？

1. “The student vocabulary retrieval performance improvement programme evaluation criteria…”
2. “There are many things that affect it and these things are important.”
3. “The post-treatment response-variability reduction indicates improved stability.”
4. “Latency—the delay between request and response—rose under peak load.”
5. “The significant substantial long-term operational performance improvement…”

96. Practice B — expand hidden relations | 练习 B：把压缩关系展开

6. staff reduction response-time deterioration;
7. approval-dependent implementation delay;
8. learner feedback response analysis;
9. post-course vocabulary retention performance;
10. risk mitigation strategy evaluation.

97. Practice C — compress safely | 练习 C：把已经明确的关系压缩

11. the time it takes the system to respond after a request → established technical term?
12. the extent to which a measure gives consistent results → term?
13. the process of putting the policy into practice → term?
14. the ability to use a result beyond the original sample → term?

98. Practice D — change audience | 练习 D：同一句信息换读者

Rewrite each for (a) a specialist and (b) an educated general reader:

15. “The intervention reduced variance in retrieval accuracy.”
16. “Implementation remains contingent on regulatory approval.”
17. “The measure demonstrates limited inter-rater reliability.”

99. Practice E — written to spoken | 练习 E：书面密度解压成口语

18. “The post-intervention reduction in outcome variability suggests increased performance stability.”
19. “Approval-dependent implementation sequencing remains the primary schedule constraint.”
20. “The observed measurement inconsistency limits confidence in the comparative analysis.”

100. Answers A — diagnostic principles | 练习 A 解析

1. Excessive noun stacking; relations hidden.
2. Under-specification; low precision.
3. Compression may be acceptable for specialists but should be tested for audience and hidden relation.
4. Good controlled decompression: technical term + brief definition.
5. Modifier overload and unclear evaluation dimensions.

101. Answers B — model expansions | 练习 B 参考

6. Response times became slower after staffing was reduced.
7. Implementation is delayed because approval has not yet been granted.
8. An analysis of how learners respond to feedback. / Analysis of learners’ responses to feedback.
9. How well learners retained the vocabulary after the course.
10. An evaluation of a strategy designed to mitigate risk.

102. Answers C — possible technical compression | 练习 C 参考

11. latency;
12. reliability;
13. implementation;
14. external validity / generalisability, depending on field and exact meaning.

103. Answers E — spoken decompression | 练习 E 参考

18. After the intervention, the outcomes varied less. That suggests performance became more stable.
19. The main schedule constraint is approval. We can’t start the next stage until approval is complete.
20. The measurements were not consistent enough, so we should be cautious about comparing the groups.

104. How a strong tutor teaches lexical density | 高水平导师怎样教信息密度？

A weak lesson says “write shorter sentences” or “use more academic nouns”. A strong lesson asks:

• What concept is being packaged?
• What does the reader already know?
• Which relationships are hidden?
• Does the noun phrase contain too many modifiers?
• Would a clause make cause, time or agency clearer?
• Which technical term deserves compression?
• Can the learner expand the sentence?
• Can the learner recompress it appropriately?

105. The learner should become their own information architect | 最终，学习者要会设计“读者怎样收到信息”

Before keeping a dense sentence, ask:

• How many new concepts are here?
• How many relations must be inferred?
• Which technical terms are shared?
• Can the reader identify actor, action, time and cause?
• Would a second sentence reduce load?
• Would an example make the abstraction recoverable?
• Is this density efficient—or merely impressive-looking?

106. Canonical ownership and collision boundary | 本课的所有权边界

This lesson owns the Mandarin-supported C1–C2 route for lexical density, information load and controlled compression/expansion. It coordinates but does not replace:

• Lesson No.016 — nominalisation and word-class shifts.
• Lesson No.018 — lexical bundles and sentence frames.
• Lesson No.021 — lexical cohesion and terminology consistency.
• Advanced English Lesson No.010 — adapting complex English for different audiences.

107. Recommended reference floor | 推荐参考资源

• Biber & Gray — Phrasal versus Clausal Discourse Styles — dense phrasal structures as a defining feature of academic writing.
• Biber & Gray — Functional Extension of Phrasal Grammatical Features — information packaging through noun phrases and phrasal modifiers.
• Biber & Gray — The Loss of Explicitness in Academic Research Writing — how compressed structures can make semantic relationships less explicit.
• Studies in Second Language Acquisition — Linguistic Complexity and CEFR Text Difficulty — lexical density as information density and a contributor to L2 processing difficulty.
• Oxford Advanced Learner’s Dictionary — meaning, word class, collocation and domain-label verification.
• University of Manchester Academic Phrasebank — function-based academic phrasing that can make logical relationships more explicit when needed.

108. SEO language map | 本课关键词范围

This lesson naturally serves lexical density English, information density writing, academic writing density, noun phrase complexity, dense academic English, information load English, lexical density C1 C2, content words function words, academic nominal style, noun stacks English, how to make academic writing clearer, academic writing too dense, information packaging English, expert novice writing, spoken vs written lexical density, advanced English for Chinese speakers, Mandarin academic English vocabulary, 英语词汇密度, 英语信息密度, 学术英语信息负荷, 英语名词短语, 英语名词串, 学术写作太难读, 高级英语词汇, 中文母语英语学习, C1 英语 and C2 英语.

109. Your assignment | 本课作业

Choose one 500–800 word analytical, academic or professional text you wrote recently.

1. Underline every technical term.
2. Circle every nominalisation.
3. Box noun strings of three or more content words.
4. Mark each sentence that introduces more than two unfamiliar concepts.
5. Choose the three densest sentences.
6. Expand each into explicit clauses showing actor, action, cause, time and condition where relevant.
7. Compare the expanded version with the original.
8. Recompress only the relationships your target reader can safely infer.
9. Add a definition or example where a new technical term carries too much load.
10. Rewrite one paragraph for a general reader.
11. Rewrite the same paragraph for a specialist.
12. Convert one dense written sentence into a natural spoken version.

Do not score yourself on how many words you removed. Score three things: recoverability, precision and efficiency.

如果展开以后意思变得更清楚，不代表原句一定错；它告诉你原句隐藏了哪些关系。接下来真正高级的工作，是判断哪些关系值得重新压回去，哪些应该留在表面给读者看见。

110. The final rule | 最后一条规则

Compress what the reader already owns. Expand what the reader still has to build.

读者已经拥有的知识，可以压缩；读者还需要建立的关系，应该展开。

Use technical terms when they save shared work. Use nominalisation when a concept deserves to become a stable object. Use dense noun phrases when their relationships are conventional and recoverable.

But if the reader must guess who acted, what caused what, which noun modifies which, or whether a phrase expresses time, purpose or ownership, the sentence has transferred too much work to the reader.

Advanced vocabulary gives you compression power. Advanced communication tells you when to release that pressure.

真正的高级，不是“我可以把这句话压得多密”。真正的高级是“我知道读者在哪里需要压缩，在哪里需要空气”。

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Series: EDKS-ADV-VOC-ZH · Lesson 026 · Batch 07.