Step three in our Lewis structure rules is to figure out how many electrons we would need in order for every single atom in our molecule to have a full valence shell.

路易斯结构规则的第三步是,找出让分子中每个原子的价壳层,都排满应该需要多少个价电子。

麻省理工公开课 - 化学原理课程节选

And which ones you can put in. How to fill up that bin. Very important in shipping.

还有置放的种类，如何填满这个箱子呢？,这在运输中是个很重要的问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, in any arbitrary crucible full of molten silver, half of them are going to be spin-up and half of them are going to be spin-down.

并且，在任一个浇满了熔银的坩埚中，银原子中的电子一半是向上转,另一半是向下转。

麻省理工公开课 - 固态化学导论课程节选

The same thing when you're going from filling in the 2 s to putting that first electron into the 2 p.

当你填满，2，s，后再往，2，p，中,放第一个电子的时候就会发生这种问题。

麻省理工公开课 - 化学原理课程节选

There are festivals held in each city just for its own citizens and my guess is that when you could do that, when you felt that you could recruit a full colony from your fellow citizens in Corinth, let us say, that's what you did.

有些城市的节日只有当地居民才参与,当你觉得时候到了,可以从科林斯居民中,招满去殖民地的人,这就是你要做的

耶鲁公开课 - 古希腊历史简介课程节选