1、At bay：（经常和keep或hold连用）使……不能接近 。One of the gangsters kept the police at bay until the rest escaped 。
2、At bottom：实际上 。Judy said she was not jealous of her friends success, but at bottom, she was 。
3、At close quarters：逼近地 。he two rivals grappled at close quarters 。
【at的用法 at的用法口诀】4、At cross purposes：互相误解 。I think we are at cross purposes. When I said J.C., I meant Jason Chen, not John Chen 。
