1
under observation
The patient was kept under observation overnight.
病人被留院观察了一整夜。
观察，观测
先理解核心含义，再看它在真实句子里的用法。
观察，观测
the act of watching someone or something carefully, especially to learn something
The patient was kept under observation overnight.
病人被留院观察了一整夜。
指仔细看以获取信息
观察的行为和被观察的事实
The act of observing, and the fact of being observed (see observance)
记录事件的行为或所记录的内容
The act of noting and recording some event; or the record of such noting.
评论或意见
A remark or comment.
基于观察的判断
A judgement based on observing.
The scientist recorded her observation of the bird's behavior.
科学家记录了她对鸟类行为的观察。
He made an interesting observation about the company's growth.
他对公司的增长提出了一个有趣的评论。
Based on my observations, the plant grows better in sunlight.
根据我的观察，这种植物在阳光下长得更好。
The patient was kept under observation overnight.
病人被留院观察了一整夜。
此义项中observation可数，指言论或观察结果。
She made an interesting observation about human behavior.
她对人类行为做出了一个有趣的评论。
此义项中observation不可数，指观察过程或行为。
His observation of the birds lasted for hours.
他对鸟类的观察持续了数小时。
Not this
We made observation of the stars.
Use this
We made an observation of the stars.
Observation 表示一次观察行为时为可数名词，需加不定冠词 a/an。
Not this
The patient is in observation.
Use this
The patient is under observation.
表示“被观察”应使用固定搭配 under observation，而非 in observation。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
参与观察
The researcher used participant observation to study the community.
研究者使用参与观察法研究这个社区。
在观察中
The patient was kept under observation overnight.
病人被留院观察了一夜。
观景台
We went to the observation deck to enjoy the view.
我们去了观景台欣赏景色。
观察能力
His observation skills helped him solve the mystery.
他的观察能力帮助他解开了谜团。
临床观察
Clinical observation is essential for accurate diagnosis.
临床观察对于准确诊断至关重要。
发表看法
She made an interesting observation about the data.
她对数据发表了一个有趣的看法。
在观察中；受监视
The patient was kept under observation for 24 hours.
病人被观察了24小时。
持续观察；监视
The police decided to keep the suspect under observation.
警察决定监视那个嫌疑人。
你看，但你没有观察。
Sherlock Holmes often says this to Dr. Watson.
夏洛克·福尔摩斯经常对华生医生说这句话。
世界充满了明显的事物，却没有人偶尔去观察。
Also from Sherlock Holmes, highlighting the importance of observation.
同样出自福尔摩斯，强调了观察的重要性。
Use observation naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象科学家在观察（observe）后写下报告，-ation就像记录的动作，observation就是观察和记录的结果。
作为名词，'observation' 通常用于正式或学术语境，如科学观察或数据记录；在日常口语中也可使用，但多指'观察'这一行为。
注意：作'观察'不可数；作'观察结果、言论'可数。
Dictionary facts from ECDICT, WIKTIONARY.