sleep off 用睡觉消除（疲劳，痛苦）

　　They have been up all night and are sleeping it off.

　　他们昨晚整夜未眠，所以这时正在补觉。

　　When I have a headache, I always sleep the pain off.

　　我一头痛就去打个盹，完了就不疼了。

　　疯狂练习吧！