P-25:put someone's mind at rest 使放心
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。
