If you're unsure about that, check out, of course, chapter three in the textbook, where these issues are addressed.

当然,如果还不确定,可以看看课本的第三章,这些问题都提到了

耶鲁公开课 - 聆听音乐课程节选

And if you're not sure what to do, you can always go to club fairs,

如果你不确定该做什么，你可以一直去俱乐部的集会，

阿卡贝拉组合最棒 - SpeakingMax英语口语达人

You can laugh for things you are not so sure with.

你不确定的事情就可以一笑置之。

普林斯顿公开课 - 人性课程节选

In fact, we can never be fully free of the fear and of the anxiety and uncertainty of the state of nature, even within to some degree of fully constituted civil society.

实际上，我们完全可以,脱离恐惧焦虑和,对自然状态的不确定,甚至在一定程度上可以摆脱完全文明的社会。

耶鲁公开课 - 政治哲学导论课程节选

.. I guess, unfortunately, it is for... there needs to be a number put somewhere, like, I'm not sure what that number would be, but I do agree that there could possibly be a number put on the human life.

我觉得，不幸的是。,有时确实需要标价，不过我不确定具体数字，但我确实认同,人的生命也许可以被标价。

耶鲁公开课 - 公正课程节选

I'm not sure about the other schools, but I know FIT, we get in free.

我不确定其他学校的情况，但是我知道FIT的学生可以免费进去。

学生们的艺术热情 - SpeakingMax英语口语达人

I'm not quite sure,because we have to turn to a metaphysical question that we've touched upon before,namely,can souls split?

我不太确定，因为要先提出一个以前说过的,形而上学的问题，就是，灵魂可以分裂么？

耶鲁公开课 - 死亡课程节选

So you can see that we're starting to have a very complicated equation, and it turns out that it's mathematically impossible to even solve the exact Schrodinger equation as we move up to higher numbers of electrons.

所有你们可以看到我们得到了,一个非常复杂的方程，结果是它在数学上是,不可能解出确定的,薛定谔方程,当我们考虑更高的电子数目的时候。

麻省理工公开课 - 化学原理课程节选