但是，你知道，所有站在你们面前的老师，可能都会这样介绍他的课程，如果他们不那样相信着，那他们就不应该教那门课了。

But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

youdao

我相信你们可以想象如果你,需要把一个蛋白质标记成绿色,一个标记红色，一个标记黄色，这样你就可以研究非常复杂的生物学过程。

And I'm sure you can imagine that if you want to label onw protein green and one red and one yellow, now you can start looking at really complex biological processes.

youdao

你们这样做，你们这样做，是因为你们坚信一个美国信念，那就是，无论条件多么艰难困苦，相信这个国家的人是可以改变它的。

You did this-you did this because you believed so deeply in the most American of ideas - that in the face of impossible odds, people who love this country can change it.

youdao

And you will be invited to make that mistake on an exam, I'm sure.

我相信在考试中你们有人肯定,会犯这样的错误。

麻省理工公开课 - 热力学与动力学课程节选

Why would that be and can you believe that?

为什么会是这样,你们相信吗

耶鲁公开课 - 金融市场课程节选