I will only do them on one condition, and that is I want to be able to teach you what the assumptions are that underlie the points in the derivation.

只在一个情况下我才会做，那就是要能够教会你们,假设是,构成了推导的基础。

麻省理工公开课 - 固态化学导论课程节选

Some people prefer only taking the courses that they want to take. What do you think of that?

一些人只愿意学习他们喜欢的课程。你对此怎么看？

介绍好朋友 - SpeakingMax英语口语达人

Do you want to be lobotomized where that's the only way, at least that we've got so far, to imagine a life that you would enjoy forever.

你们想接受额叶切除术吗,至少那是我们想到的唯一办法，去想象一种永远享受的生活。

耶鲁公开课 - 死亡课程节选