So let's see, we started with 8 bonding electrons, and we used up only 4, so the answer is yes, we have 4 bonding electrons left.

那么让我们来看看，我们一开始有八个成键电子，然后只用掉了四个，因此答案应该是还有剩余，我们还剩下了四个成键电子。

麻省理工公开课 - 化学原理课程节选

I give you a little animation that was implemented with this programming language in just a night called Raining Men.

这里有一个用这种语言编写的,叫做Raining，Men的小动画,我只用了一晚上就完成了编程。

哈佛公开课 - 计算机科学课程节选

And, subsequently, we looked at photoelectron spectroscopy which is a technique that allows us to determine binding energies, ionization energies being just one example.

随后，我们看了光电子谱,这是一种只用一个样品,能够测量结合能，离子化能的技术。

麻省理工公开课 - 固态化学导论课程节选