a)RECOVER/GET BETTERto feel better quickly after being ill, or to become successful again after failing or having been defeated 恢复健康,恢复元气;重整旗鼓SYN recover
The company’s had a lot of problems in the past, but it’s always managed to bounce back.
过去这家公司经历过不少困难,但每次总能重整旗鼓。
b)if an email that you send bounces back or is bounced back, it is returned to you and the other person does not receive it because of a technical problem 〔电子邮件〕弹回,被退回