So let's turn our attention to a new topic, which is thinking a little bit about the periodic table, and also talking about periodic trends.

我们的新主题上，我们将会讨论一点关于元素周期表的知识，同时也会讲一讲周期性规律。

麻省理工公开课 - 化学原理课程节选

This is a shift, this is a new topic that we're starting.

这是一个转折点，我们要讨论一个新的话题。

麻省理工公开课 - 化学原理课程节选

But, we'll see as 3.091 progresses, people working almost on the same topic, making new discoveries out of the same lab, one of them might subsequently win the Nobel in physics.

但是，我们会看到随着3。091这门课的进行，人们几乎在研究的同一内容，在同一个实验做出重大的发现，他们中的一个很有可能,获得诺贝尔物理学奖。

麻省理工公开课 - 固态化学导论课程节选

N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.

任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点，因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况，包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。

麻省理工公开课 - 化学原理课程节选