All right. So most of you got that, though there is this little sub-set we have thinking that we have one, so let's actually write this out here.

好，大部分人都答对了，虽然还,有些人没对，让我们把这个写下来。

麻省理工公开课 - 化学原理课程节选

Again, pset one will walk you through this and you'll get familiar with this stuff, even though it looks a little arcane at first glance.

此外，习题集1将带你通过这个,你将熟悉这些东西，即使第一眼它看起来是比较晦涩的。

哈佛公开课 - 计算机科学课程节选