observe

1. V-T If you observe a person or thing, you watch them carefully, especially in order to learn something about them. 观察

Olson also studies and observes the behaviour of babies. 奥尔森还研究并观察婴儿的行为。

Are there any classes I could observe?

有我可以观摩的课吗？

2. V-T If you observe someone or something, you see or notice them. 观察到[正式]

In 1664 Hooke observed a reddish spot on the surface of the planet. 1664年，胡克观察到了那颗行星表面的一个微红的斑点。

3. V-T If you observe that something is the case, you make a remark or comment about it, especially when it is something you have noticed and thought about a lot. 评述[正式]

We observe that the first calls for radical transformation did not begin until the period of the industrial revolution. 我们认为，首次要求彻底改革的呼声直到工业革命时期才出现。

4. V-T If you observe something such as a law or custom, you obey it or follow it. 遵从

Imposing speed restrictions is easy, but forcing drivers to observe them is trickier. 实行速度限制容易，而迫使司机遵守较难。

The army was observing a ceasefire. 军队当时在遵守一项停火协议。

5. V-T If you observe an important day such as a holiday or anniversary, you do something special in order to honour or celebrate it. 庆祝

...where he will observe Thanksgiving with family members. …在那里他将与家人一起庆祝感恩节。