So if you haven't already, just glance at the person next to you, or say hello if you don't know them.

如果你还没有做好，那就看看你旁边的人,如果你不认识他们就跟他们打个招呼。

哈佛公开课 - 计算机科学课程节选

And it's like, you wouldn't get these kind of opportunities if you didn't know the right people, you know.

这就是，要是你不认识对了人，你是得不到这些机会的，你知道。

认识更多人 - SpeakingMax英语口语达人

There is a kind of cultural myth around the stranger, the person you don't know, who you will--who you fall in love with.

可能对陌生人有一种文化迷思，你不认识他，却将要爱上他。

耶鲁公开课 - 心理学导论课程节选

Well, you don't know Ruth.

因为你不认识露丝

耶鲁公开课 - 死亡课程节选

And as you're reading them, look up the words you don't know. It's that simple.

看报时，查查你不认识的词。就是那么简单。

英语阅读：技巧 - SpeakingMax英语口语达人

If you don't mind, could you tell us about how you met your wife?

如果你不介意，可以告诉我们你是怎么认识你老婆的吗？

第一次与妻子见面 - SpeakingMax英语口语达人

So, for instance, they may be people like you who filled in a form, one question along a very long form was your sexual orientation, and then you're sitting down being interviewed by somebody and your interview is being filmed, and then other people are shown--who don't know you are shown the film.

他们可能是像你们一样在填一张表格，在一连串的问题中，有一条是关于你的性取向，然后你坐着，有人问你问题,这个提问过程会被拍下来，然后拿给别人看，这些人不认识你,他们会看这个录像。

耶鲁公开课 - 心理学导论课程节选

You don't know because you're too young.

你不认识他是因为你太年轻了。

耶鲁公开课 - 心理学导论课程节选