What it looks like up here, the simple Cartesian model of it is these things smear this way.

它看起来像什么，它的简单的笛卡尔模型,就是这样重叠的。

麻省理工公开课 - 固态化学导论课程节选

So, Lewis structures are really a model for a way to think about what the valence electron configuration is, and as I said, it's not based on quantum mechanics, it's something that Lewis observed far, far before quantum mechanics were discovered.

路易斯结构实际上是一个用来考虑价,电子排布的模型，而就像我说的，它并不以量子力学为基础，而是路易斯在以前发现的,在量子力学出现很早前。

麻省理工公开课 - 化学原理课程节选

What I'd like to do today is talk to you about how it is that we moved from this old model to what it is that today many institutions call the Yale model.

今天我想讲的就是,我们如何从传统模式,转变为所谓耶鲁模式

耶鲁公开课 - 金融市场课程节选