1
retention of sth
retention of 后接被保持的事物。
The retention of knowledge requires regular review.
知识的保持需要定期复习。
保持，保留
先理解核心含义，再看它在真实句子里的用法。
保持，保留
the act of keeping or maintaining something
The retention of knowledge requires regular review.
知识的保持需要定期复习。
指持有或保存的状态或能力
保留或被保留的行为。
The act of retaining or something retained.
记住事物的行为或能力。
The act or power of remembering things.
记忆；保留在脑中的事物。
Memory; what is retained in the mind.
尿液和粪便的不自主滞留。
The involuntary withholding of urine and faeces.
The student's retention of the material was excellent after repeated review.
经过反复复习，这位学生对材料的记忆力非常好。
Good employee retention programs are essential for company growth.
良好的员工保留计划对公司发展至关重要。
The soil's water retention capacity is important for agriculture.
土壤的保水能力对农业很重要。
retention of 后接被保持的事物。
The retention of knowledge requires regular review.
知识的保持需要定期复习。
retention 作前置定语修饰名词，表示保持该方面的能力或策略。
The company is focusing on customer retention.
公司正专注于客户维系。
in 后接具体领域或群体。
This technique improves memory retention in elderly patients.
这种技术可改善老年患者的记忆保持能力。
Not this
I want to retention this information.
Use this
I want to retain this information.
英语中 retention 是名词，表示‘保持、记忆力’，不能直接用作动词。动词形式是 retain。应改为 retain 作为谓语。
Not this
She has good retention for English vocabulary.
Use this
She has good retention of English vocabulary.
retention 常与介词 of 搭配表示‘对……的保持/记忆’，表示‘对……的记忆’时使用 retention of，而非 retention for。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
记忆力保持
Regular reading can improve memory retention in older adults.
定期阅读可以改善老年人的记忆力保持。
保留率
The company’s employee retention rate has increased this year.
公司今年的员工保留率有所提高。
数据保留
We need to comply with the data retention policy.
我们需要遵守数据保留政策。
人才保留
Offering competitive benefits is key to talent retention.
提供有竞争力的福利是人才保留的关键。
保水性
This soil has good water retention for crops.
这种土壤对作物有良好的保水性。
Use retention naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
retention 中的 ten 像中文‘十’，十根手指紧握不放，即‘保持’。
[object Object]
通常不可数，表示保持或记忆，常用搭配 retention of sth.
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY, WORDNET.