observation
noun uk/ˌɒb.zəˈveɪ.ʃən/ us/ˌɑːb.zɚˈveɪ.ʃən/
(WATCHING)
B2 [ U ]观察;观测;监视
the act of observing something or someone
close observation of nature/human nature/animal behaviour 对自然／人性／动物行为的认真观察
The police are keeping the suspect under observation. 警方监视着犯罪嫌疑人。
She was admitted to hospital for observation (= so that doctors could watch her and see if anything was wrong with her). 她被收治入院接受观察。
(NOTICING)
B2 [ U ]观察（力）
the fact that you notice or see something
She has remarkable powers of observation (= is very good at noticing things). 她具有非凡的观察力。
C1 [ C ] formal评论，评述;言论
a remark about something that you have noticed
The book is full of interesting observations on/about the nature of musical composition. 这本书里有许多关于音乐创作本质的有趣评论。
May I make an observation? 我可以发表一下评论吗？