keep your hand in
US /kiːp jʊər hænd ɪn/
UK /kiːp jʊər hænd ɪn/
1.
保持手感, 不荒废技能
to continue to do something regularly so that you do not lose your skill
:
•
Even though she retired, she still teaches a class once a week to keep her hand in.
尽管她退休了，她仍然每周教一节课以保持她的技能。
•
He likes to play chess occasionally just to keep his hand in.
他偶尔下棋只是为了保持手感。