但是，我们已经把这些困难的部分提出了，所以你不用担心了。

Naturally though, we've put the hard yards in so you don't have to.

youdao

他们一般是学分制的，所以你不用担心，将情况说明。

Commonly credit makes them, so you need not worry, show the case.

youdao

那些危险的动物住在笼子里，所以你不用担心你的孩子会受到伤害。

The dangerous animals live in cages, so you need not worry about your children.

youdao

And we haven't talked about reactions at all yet, so you don't need to worry about the specifics of that exactly, but just that if you have this negative change in energy, you have a more stable product than you do reactant.

当然我们还没有开始讨论反应，所以你不用担心它的细节是怎么样的，你只需要知道，如果能量的变化是负值，那么你将得到一个比反应物更稳定的生成物。

麻省理工公开课 - 化学原理课程节选

So you don't have to go to work and worry about waking up early tomorrow.

所以你不用上班，也不用担心第二天一早得爬起来上班。

I'd like 实战 - SpeakingMax英语口语达人