我曾经认为对于一个问题只有一个最优的解决方法，但是我知道了这样的想法限制了成功的可能。

I used to think that there was one best solution to a problem, but I've learned that that kind of thinking limits the possibility of great success.

youdao

但是现在我知道了，艺术也是一种武器。

But now I know art is my weapon.

youdao

她现在还在坚持她没有说谎，但是我已经不知道了。

She still insists she is telling the truth, but I don't know anymore.

youdao

I know I have the wrong glasses on the see hands up too, but... STUDENT: PROFESSOR: Who said it?

我知道就算我带错了眼镜,也能看到举手，但是…,学生：【不解中】,教授：谁说的？

麻省理工公开课 - 计算机科学及编程导论课程节选

I don't know what else. I wrote some other books. But I... So yeah,

我不知道别的了。我写了一些别的书。但是，我……，

在洛杉矶写作 - SpeakingMax英语口语达人

You guys probably know that too from your days at the daycare, but I want to derive the formula and put it up, then we'll see how to use it.

你们可能从幼儿园起就已经知道这个式子了,但是我想重新推导一遍,再来看如何进行运用

耶鲁公开课 - 基础物理课程节选