A man cannot spin and reel at the same time. 一心不能二用。

英语谚语类

指一个人不能同时做两件完全不同的事情。
上一篇：A man can do no more than he can. 凡事都应量力而行。
下一篇：A man is known by his friends. 什么人交什么朋友。