watch carefully meaning in Chinese

当心
认真看
注意看

We needed to watch carefully when the thai leaders associated with us would be replaced .
当与我们有交往的泰国领导人被撤换时，我们就要密切注意。
Every teacher watched carefully and took notes
各教研组教师都认真的观看记录了这节课，在
Watch carefully the small arrow , he will prompt you direction
注意看小箭头，他会提示你行走方向。
Watch carefully and pick one
仔细看看，来选一个
If you watch carefully you will see how i do it / how it is done
你要是仔细观察,就能看出我是怎麽做的[这是怎麽做的]

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