So we'll talk specifically about drawing Lewis structures and then about formal charge and resonance, which are within Lewis structures.

因此我们会专门讲一讲,如何来画路易斯结构,然后再讨论形式电荷与共振论，它们也属于路易斯结构的范畴。

麻省理工公开课 - 化学原理课程节选

One, two, three, four, so on each level of the picture I'm drawing, I've seem only to be looking at each number once.

，2，3，4，可见，在我画的,这幅图的每一层上，对每个数字,都只会用到一次。

哈佛公开课 - 计算机科学课程节选

In a moment we will adjoin to the transept where cake awaits and in just a few quotes will you actually see a picture of said cake, but we thought we'd paw off a few quotes who tend to have appeared on campus at some websites familiar to you.

一会儿我们去教堂休息，那儿有免费糕点,看完别人的评论后，你们会看到一幅画，假设画的是糕点,我们跳过几个评论,因为这些评论,在校园网站上都能看到。

哈佛公开课 - 计算机科学课程节选