他把他预定的拜访告诉她，并请求她为海蒂打包东西，因为只有她知道怎么做。

Telling her of his intended visit, he entreated her to pack the things for Heidi as only she knew how.

youdao

就是因为人们不知道怎么做决定。

People don't know how to make decisions.

youdao

但只有找才知道怎么做，差别就在这只。

But I know how, an 'that's the difference.

youdao

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

I could imagine writing another function for same point, and I have to give it a name like same point polar, and same point Cartesian.

程序不知道怎么来做了,它没有对应的处理方法，所以它要抱怨了,那么我这里的问题就是，这也是我一直想要说的。

麻省理工公开课 - 计算机科学及编程导论课程节选

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