He is waiting at the bus stop?为什么用at,不用for?

He is waiting at the bus stop?为什么用at,不用for?
He is waiting at the bus stop?为什么用at,不用for?

He is waiting at the bus stop?为什么用at,不用for?
at表示一个小的地方；for表示等待的对象.显然这里要用at才合适
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