So, if you'd like to switch into one of these three, they have very low numbers right now.

如果你们想要更改去上这三个课程，还有些名额。

麻省理工公开课 - 固态化学导论课程节选

And in that sense, a lot of my classes are difficult, I have a lot of help on.

虽然有些课程很难，但总能得到很多帮助。

求学热十足的学校 - SpeakingMax英语口语达人

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

Some of you would have been in classes that do that before.

有些同学可能之前参加过这种课程

耶鲁公开课 - 博弈论课程节选

Just a few reminders, if any of you are here for the first time, and I know there are a few, if you go to this particular website, and you can get to this from the classes server as well, you'll see the course website that we've developed and it has a lot more information than if you just go to the classes server and click on the syllabus.

提醒一句,如果有同学是第一次来听课,我看到了有些新面孔,你们可以登录这个网站,从课程服务器也能找到,你们会发现我们更新了课程网站,其中含有大量的信息,若你只访问课程服务器,点击教程大纲

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And some of my classes are co-ed,

有些课程是男女同班的，

高中生活怎么样？ - SpeakingMax英语口语达人