put someone's mind at rest 使放心
【讲解】
介词词组at rest的意思是“静止,休眠”。从字面理解,该习语的意思是“将思维、思想置于休眠状态”,喻指“放心,不再担心。”例如:We have finished the work. Yon can put your mind at rest.(我们已经完成了工作,你可以放心了。)
【对话】
A:I've been worried about the examination's results all afternoon.
A:我整个下午都为考试结果担心。
B:Don't be silly. I think you must have passed.
B:别傻了,你一定会通过的。
A:I'm not sure.
A:我没把握。
B:You can call the teacher to ask about it, and it will put your mind at rest.
B:你可以打电话问问老师,那样的话,你就放心了。