keep your chin up
US /kiːp jʊər tʃɪn ʌp/
UK /kiːp jʊər tʃɪn ʌp/

1.
振作起来, 保持乐观
to remain cheerful in difficult circumstances
:
•
I know things are tough, but keep your chin up!
我知道情况很艰难,但振作起来!
•
Even after losing the game, the coach told his team to keep their chins up.
即使输掉了比赛,教练也告诉他的队员们要振作起来。