Archivist Constance Potter says genealogy can be addictive: once you start, it is hard to stop.

VOA: special.2010.06.28

But another possibility is once you do something it's kind of hard to stop.

但也有可能是因为,婴儿很难使自己的惯性动作停下来

耶鲁公开课 - 心理学导论课程节选

You need to stop making me work so hard.

你不要再让我这么拼命地工作了。

so that 实战 - SpeakingMax英语口语达人

And,it does not seem that hard work will stop them.

VOA: special.2010.07.13

The Confederates fought hard, but could not stop them.

VOA: special.2009.12.17

So I thought,'Okay then, stop thinking so hard and just do it,' 'cause I know I have it in me.

VOA: standard.2009.08.18

I will not stop fighting for an economy where hard work is rewarded,".

VOA: standard.2010.01.22