bounce back 卷土重来；受挫折后恢复原状；回声。
If you bounce back after a bad experience, you return very quickly to your previous level of success, enthusiasm, or activity.

【例句】
We lost two or three early games in the World Cup, but we bounced back.
在世界杯比赛开始时我们有两三场比赛失利，但后来我们又恢复了状态。

He is young enough to bounce back from this disappointment.
他还年轻，会很快从失望沮丧中恢复过来的。