So as we said when we first introduced covalent bonds, it's a sharing of electrons, but it's not always an equal sharing.

当我们刚开始介绍共价键的时候，我们说过电子是被共用的，但是共用却不一定是均等的。

麻省理工公开课 - 化学原理课程节选

All right, so where we left off with the photoelectric effect was when we first introduced the effect, we were talking about it in terms of frequencies.

好，我们刚才停止光电效应这个话题,是当我们第一次用频率，来讨论这个效应的时候。

麻省理工公开课 - 化学原理课程节选

In each set, the first plague is accompanied by a notation of the time in the morning. It's also introduced by God's speech, when God says, "Present yourself before Pharaoh," and to do this in the morning.

在每一组中，第一次瘟疫都是发生在早上,可以从上帝的话中看出来，上帝说，今天早晨，“到法老面前去“

耶鲁公开课 - 旧约导论课程节选

When we first introduced the Schrodinger equation, what I told you was think of psi as being some representation of what an electron is.

当我们第一次介绍，薛定谔方程的时候，我说你们，可以,把psi看做是，电子位置的代表。

麻省理工公开课 - 化学原理课程节选

So each of the first plagues in the sets of three is introduced this way.

每三组的第一次瘟疫都是这样开始。

耶鲁公开课 - 旧约导论课程节选