So, if we want to think about what the first ionization energy is of boron, what you want to do is write out the electron configuration, because then you can think about where it is that the electron's coming out of.

如果我们要考虑,硼的第一电离能，你首先要做的是写出它的电子排布，因为在这之后,你才能知道拿走的是哪里的电子。

麻省理工公开课 - 化学原理课程节选

Because it came from optics, you know, rays of sunlight and so on And in fact, even when we first started pulling synthetic fiber, the first synthetic fiber cellulose was referred to as ray on, because it looked like a ray that was being pulled.

因为它源自光学，比如太阳光线等等,实际上，及时当我们首先开始抽出,人造纤维，第一根人造纤维的纤维素,叫做光线，因为那条在被抽出的纤维素,看起来像是一道光线。

麻省理工公开课 - 固态化学导论课程节选

OK? And in fact, if you look at the code up here, and it's on your handout, the very first one, x 1, right here- if I could ask you to look at it-- is a piece of code to do it. And I'm less interested in the code than how we're going to analyze it, but let's look at it for a second.

实际上，如果你看看,你们课堂发的材料上面的代码，第一页上的，就是那-,大家请看看实现的这一部分代码,我不太关心,我们会怎么解释这个代码,首先让我们先看看。

麻省理工公开课 - 计算机科学及编程导论课程节选

The first one is, first impressions matter a lot.

首先，第一印象非常重要。

耶鲁公开课 - 心理学导论课程节选

In our consideration of Genesis 1 and 2, We first need to consider a Babylonian epic, an epic that is known Enuma elish By its opening words at the top of the column over there, Enuma Elish, which means "when on high," the opening words of this epic.

在我们学习《创世纪》第一章和第二章时，我们首先要了解一部巴比伦史诗,它因开篇第一句被人们所知，它的意思是，当在天国时，这就是开篇的话。

耶鲁公开课 - 旧约导论课程节选