But then we did some on the structure of universities so that students would have a broader notion of all of that, particular in view of the history.

然后我们决定加入一些大学结构的内容,好让学生们有更广阔的视野,尤其是从历史的角度。

普林斯顿公开课 - 人性课程节选

Everything like just the design and also the structural part was really well made, so I like it for that.

设计和结构部分都做得很好，所以我喜欢它。

我喜欢的建筑物 - SpeakingMax英语口语达人

And in fact if I go off and run this, OK, what I was printing here was s 1 dot length, and that's -- What is it doing?

他们就是一些有结构的实例，实际上如果我去运行下这个，好，我这里输入的？

麻省理工公开课 - 计算机科学及编程导论课程节选

All right. So, let's go ahead and draw our Lewis structure here with sulfur in the middle.

好，那么，让我们来把我们的,路易斯结构画在这，硫在中间。

麻省理工公开课 - 化学原理课程节选

Well, first of all, let's look at the Lewis structure.

好，首先，我们看看它的路易斯结构。

麻省理工公开课 - 固态化学导论课程节选

This is a good way to actually check if your Lewis structure is correct or not.

这是检验你的路易斯结构,是否正确的一个好方法。

麻省理工公开课 - 化学原理课程节选

But we could, for example, look at a case where we have several different structures that look pretty good, and the one we want to determine as being the lowest energy structure is the one in which the absolute values of the formal charges are going to be lower, so essentially that they have less charge separation.

但是我们可能，比如，遇到一种情况,有好几个候选的路易斯结构看起来都挺好的，这时候我们就需要,通过比较哪个形式电荷的绝对值更低,来决定哪个结构的能量更低，本质上这个结构中分开的电荷更少。

麻省理工公开课 - 化学原理课程节选

Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.

通常一开始把电离能最低的原子,放在中心位置就很好了，如果你发现电荷没有分开,那么这个结构就没问题了，但是如果你发现有很多分开的电荷，比如这种情况，有负二，正二和负一，那么你会想要说等一下，从形式电荷来看这很不好，让我去看看其它可能的选择。

麻省理工公开课 - 化学原理课程节选