曾经跟一帮朋友学过，其实大学出来，好多英语都不用，你知道语言这种东西你老不用它就会忘记，特别是有些单词，你会觉得好熟，好像就是我们家邻居，但是你就是想不起来他是谁。

You know, language is something easily forgotten if you don’t use it. Especially for certain words, they look familiar to you, like your next door neighbor.

youdao

希望我们的合作会让你永远不会忘记的。

We hope that our cooperation will let you will never forget.

youdao

难道你会忘记我们曾经拥有过的甜蜜的梦？

And have forgotten the dreams that we did share?

youdao

But again, that we will supply for you on the exam just in case you forget it at that moment.

但在考试中我们会给出这个值,以防你当时忘记了。

麻省理工公开课 - 化学原理课程节选