起初你不知道他是什么意思，因为很难理解他。

You won't know what he means at first, for it is difficult to understand him.

youdao

你对那悖逆之家说，你们不知道这些事是什么意思吗。

Say now to the rebellious house, Know ye not what these things mean?

youdao

我以前从来不知道那是代表什么意思，但是我知道你是在用你的方式告诉我，你每天都来看过我。

I never knew what it meant, but I knew it was your way of letting me know that you had checked in on me. Anyway I looked it up.

youdao

If you don't have the units, then if you say the answer is 19, then we don't know what it means.

如果没有的话,比如你的答案是十九,那我们就不知道这是什么意思

耶鲁公开课 - 基础物理课程节选

This is on purpose, because one of the things I hope you have learned to do this semester, is look up things you don't know, and figure out what they do. What they mean.

我举这个程序是有目的的，因为我希望你们这续期能学到,如何去查找你不知道的东西并，且弄懂它,们是干什么的，是什么意思。

麻省理工公开课 - 计算机科学及编程导论课程节选