He's such a workaholic that he doesn't know how to spend his leisure time.
他是个工作狂,以至于不懂得如何打发他的空闲时间。
He who would catch fish mush not mind getting wet.
欲擒龙王,就得下海。
She always referred to them as 'the shifting population', for they came and went with such frequency that I never even got a chance to learn their names.