at的用法?At bay：（經常和keep或hold連用）使……不能接近One of the gangsters kept the police at bay until the rest escaped，我來為大家講解一下關于at的用法?跟着小編一起來看一看吧!
At bay：（經常和keep或hold連用）使……不能接近。One of the gangsters kept the police at bay until the rest escaped。
At bottom：實際上。Judy said she was not jealous of her friends success, but at bottom, she was。
At close quarters：逼近地。he two rivals grappled at close quarters。
At cross purposes：互相誤解。I think we are at cross purposes. When I said J.C., I meant Jason Chen, not John Chen。
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