But there was an exhibit of jellyfish, I know at least until last year, at the Boston Museum of Science, and all of you guys can get in there free.

但那以前有水母的展示，我知道至少去年有，在波士顿科学博物馆，你们都可以免费去看。

麻省理工公开课 - 化学原理课程节选

So one problem is unenforceability but that might far off ago that might have been a problem.

强制性是一个问题,但那也是在很久以前的问题

耶鲁公开课 - 博弈论课程节选

This is something I used to announce near the end, but then some people felt that it's not fair not to know this from the beginning.

这些话我以前都是在期末的时候说的,但后来有些同学反映,如果不在课程一开始知道这些会很不公平

耶鲁公开课 - 基础物理课程节选

I don't know how much you've seen, but quite often the way you learned physics earlier on in high school is probably different from the way professional physicists think about it.

我不知道你们对物理有多少了解,但你们以前在高中所学的物理知识,和资深物理学家们的看法,常常是很不一样的

耶鲁公开课 - 基础物理课程节选