I'm just going to go over a few of the main points here So, the first is that what we're going over notes today and also on Monday, the exam material ends at the end lecture notes from lecture 9.

我会简单地带大家过一遍几个比较重要的地方,那么，第一点是关于我们今天,和下周一要讲的内容，考试要求的内容,就到第九讲的讲义结束的地方。

麻省理工公开课 - 化学原理课程节选

And also, keep in mind that I have office hours today from 3 to 5.

还有一件事就是,要记住我的答疑时间是今天下午三点到五点。

麻省理工公开课 - 化学原理课程节选