So, step five tells us to add 2 electrons between each atom, so we add two there.

那么，第五步告诉我们在两个原子之间放上两个电子，因此我们在这放上两个。

麻省理工公开课 - 化学原理课程节选

So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.

那么让我们来做一个小选择题，请大家来告诉我,氟有多少个价电子，要记得，价电子与芯电子不同，它们是在最外壳层的最靠外面的电子。

麻省理工公开课 - 化学原理课程节选

Lithium has three electrons. If it loses two one remains. What is this formula telling us?

锂原子有三个电子，如果它失去两个,剩下一个，那么这个式子告诉了我们什么？

麻省理工公开课 - 固态化学导论课程节选

The second thing it's going to do, from a more theoretical point of view, is it's going to suggest to us that actually things aren't quite as bad we thought.

其次,它将,从一个更理论化的角度,告诉我们实际情况,并不像我们想象的那么糟

耶鲁公开课 - 博弈论课程节选

Or, if you want, you could say maybe they died, but since they obviously didn't die permanently-- after all they were brought back to life-- how could they possibly tell us what it's like to be permanently dead?

或者,如果你想的话,你可以说或许他们死过,但既然他们没有永久地死去,毕竟他们被救活了,那么他们怎么可能告诉我们,永久死亡是什么样子的呢

耶鲁公开课 - 死亡课程节选