Well, if we just take, for example, MgO, and let's try Mg, magnesium chloride just as an example.

我们以MgO为例，让我们试试Mg，MgCl2也是一个例。

麻省理工公开课 - 固态化学导论课程节选

So, let's think about kind of differentiating, however, between first ionization energy or just ionization energy, and other types such as second or third ionization energy, and let's take boron as an example here.

那么，让我们来区分一下第一电离能，也就是电离能与其他类型的电离能，比如第二，第三电离能，我们以硼为例。

麻省理工公开课 - 化学原理课程节选

More is said about this in the book I just include it here as an example, but it's sort of beyond the scope of what I wanted to talk about today.

在书上讲了很多这方面的内容,在这里我只是将其作为例子概括性地讲讲,但这已经超出我今天想讲的范围了

耶鲁公开课 - 生物医学工程探索课程节选