这些东西或许你已经知道，这些东西也不会让你恍然大悟…但是有时候，需要有人提醒你，你才能记起你已经知道的事，才能知道他们的重要性。

None of these are going to be eye-opening or stuff you don't already know... But sometimes we need to be reminded of the things we already know, to drive home their importance.

youdao

But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选

I wish that I could live in their life for one day, but you know, they're just things.

我希望我可以过一天他们的生活，但是你知道，就是东西而已。

名牌效应 - SpeakingMax英语口语达人

You put some inputs in, it has a contract that says if you put the right kind of inputs in you'll get a specific output coming out, but you don't have to know what's inside of that box.

你可以将输入一些内容,它相当于一个条件合约,如果你的输入是正确的，你就能得到特定的输出,但是你不知道盒子里面有些什么。

麻省理工公开课 - 计算机科学及编程导论课程节选