So if you demonstrate something by writing an intelligent answer just by outlining it and saying, well, what I would do is I would equate the energy lambda and then solve for lambda, I can see that you know what is going on.

如果你想证明一些东西,通过写下一些很天才的答案,仅仅大致说一下，好的，我想做的是能量相等,然后解出，我能看到你知道怎么做。

麻省理工公开课 - 固态化学导论课程节选

and your hairstylist says, "Oh, I know exactly what to do. We should make your hair blonde."

你的发型师说，“哦，我知道该怎么做。我们要把你染成一头金发。”

I'm afraid of 课堂 - SpeakingMax英语口语达人

But if you say, well, I don't know how to do this, I am not going to bother, don't grade the paper.

但是如果你说，好吧，我不知道怎么做这个，我想麻烦，别给试卷评分。

麻省理工公开课 - 固态化学导论课程节选

You'd pull out your pencil and paper, you can do it as a matrix inversion if you know how to do that, or you can just simply do substitution of one equation into another to solve it.

你知道你在小学的时候是怎么做的对吧？,你拿出你的笔和纸,如果你会的话,你可以解一个方程组,或者你可以单纯地。

麻省理工公开课 - 计算机科学及编程导论课程节选

We don't know the time and we don't know how high it's rising so you can ask, "How am I supposed to deal with this problem?"

我们既不知道时间,又不知道最高点的高度,那你就会问了,这道题该怎么做呢

耶鲁公开课 - 基础物理课程节选

And you want to know what they would do if they were in your shoes.

你想知道如果他们站在你的角度考虑他们会怎么做。

What if 课堂 - SpeakingMax英语口语达人

If you know how to do it, you can get it for really cheap.

要是你知道怎么做的话，你就可以买到很便宜的票。

实惠的歌舞剧 - SpeakingMax英语口语达人