All right. So, let's pick up where we left off, first of all we're still on the hydrogen atom from Monday.

好，让我们从上次停下的地方讲起，我们还要讲周一讲的氢原子。

麻省理工公开课 - 化学原理课程节选

All right, so where we left off with the photoelectric effect was when we first introduced the effect, we were talking about it in terms of frequencies.

好，我们刚才停止光电效应这个话题,是当我们第一次用频率，来讨论这个效应的时候。

麻省理工公开课 - 化学原理课程节选

We'd all be better off dead, " or perhaps more accurately still, " all be better off never having been born in the first place."

我们死了会更好，“或者更准确地说，“没有出生会更好“

耶鲁公开课 - 死亡课程节选