wait in the wings

US /weɪt ɪn ðə wɪŋz/
UK /weɪt ɪn ðə wɪŋz/
"wait in the wings" picture
1.

在幕后待命, 等待时机

to be ready to do something or to take someone's place, especially in a play or other performance

:
The understudy is waiting in the wings, ready to perform if the main actor falls ill.
替补演员在幕后待命,如果主角生病就准备上场。
There are several talented young players waiting in the wings for a chance to join the first team.
有几位才华横溢的年轻球员在幕后等待加入一线队的机会。