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

that your form of transportation is causing each day on your way to school or work.

不用担心你每天上学或上班的路上，你使用的交通工具会引起污染。

地铁的好处 - SpeakingMax英语口语达人

And if it goes up 6 percent, well you'll go up 10 percent or more, and if it goes down, don't worry, I'm so smart your stocks won't go down.

如果股市涨了6个百分点，你可以转到10以上的百分点，如果股市跌了，你也不用担心，你选择的人会保证你买的股票不会跌。

麻省理工公开课 - 计算机科学及编程导论课程节选

Pseudocode is kind of an English-like syntax that's just a useful way of expressing yourself fairly succinctly, fairly computer-like but without having to worry about stupid details like whether it's Java or C or whatever.

伪码是一种类似英语的语法,可以简洁地,表达自己的意思，它与电脑类似,但是你不用担心那些愚蠢的细节,比如Java，C语言或者其他什么语言。

哈佛公开课 - 计算机科学课程节选

Wouldn't it be nice to be able to go someplace and just for a period think to yourself, "Well, you know, right now I don't have to worry about that.

要是能去那岂不是很好,你能有一段时间对自己说，“你知道，现在我不用担心死亡了。

耶鲁公开课 - 死亡课程节选

So this means we can code for it in DNA, you don't have to worry how am I going to get into the cell.

这意味着我们可以在DNA中编写它，你不用担心它怎么进到细胞里去。

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

It's a bit more ethical because you don't have to worry about all the pollution

这样做很符合社会公德，因为你不用担心会产生污染，

地铁的好处 - SpeakingMax英语口语达人

Don't be worried. You can succeed.

不用担心，你能成功的。

Don't 课堂 - SpeakingMax英语口语达人

You wouldn't think I would have, I don't have -- all right, be that way about it.

你不用担心我需要什么，我不需要什么--好了，先这么做。

麻省理工公开课 - 计算机科学及编程导论课程节选

As an undergrad, you don't have to worry about it, you're just worried about learning.

我们还要造一个新的探测器,这会不会太浪费时间？作为一个本科生,你就不用担心这个了，你可以在上面花时间。

麻省理工公开课 - 化学原理课程节选