This is the strongest memory I have, and I remembered a) that I didn't learn them, and that was really bad because it kept coming up, but the other thing I remember is that I had no idea why they were important. I didn't really understand what any of these molecules were.

这就是我最深刻的记忆，我记得我并没有学好，这十分不好，因为之后它们总是不断出现,但另外的事情我记得,是我完全没有概念为什么。

麻省理工公开课 - 化学原理课程节选

It's kept up very, very nicely and very beautifully. So we are lucky to have it.

这里保持得很好，很漂亮。所以能拥有这样一个公园是一件幸事。

最美丽的公园 - SpeakingMax英语口语达人