仔细观察?
vi. scrutinize
misc. have a close-up view of ; keep under observation
仔细观察某人?Observe sb closely
If you watch carefully, you will see how to do it/how I do it.如果你仔细观察，就会看到我如何做此事。
一般是go through,look overgo over都是可以的
例句
1.
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当你收到这封信时要仔细检查。
once you receive the letter, look it over.
2.
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它需要练习，你必须仔细检查这三步中的每一步。
It takes practice, and you must go through each of the three steps.
3.
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仔细检查工作责任然后确切地告诉你的家人你希望他怎么做。
Go over job responsibilities and tell your family member exactly what is expected from him.
