keep one's hand it 练习
【讲解】
该习语亦可作have one's hand in,表示“使技能不荒废”。注意区别与keep one's hands on的区别,后者是指“紧紧控制”。
【对话】
A:What do you do first in the morning?
A:你早晨起来第一件事做什么?
B:I play the violin to keep my hand in.
B:拉小提琴,练练手。
A:Yes? Is it necessary for an expert like you?
A:是吗?像你这样的专家有必要吗?