So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

对于任意净电荷的情况,我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

麻省理工公开课 - 化学原理课程节选

Because of this my mother used to make Jell-o that had fruit suspended in it, and the fruit doesn't sink to the bottom like you'd expect it to sink through water, but it stays suspended inside.

正因为如此,当我母亲以前做,那种加水果的果冻的时候,水果并不会沉到果冻底部来,你以为它会像在水里那样,但水果是悬在果冻里的

耶鲁公开课 - 生物医学工程探索课程节选

that you were coming in to study what he calls "the master science " " the science of sciences " in some respects. It is that priority that Aristotle attributes to the regime that I think is what distinguishes his kind of political science from that of today.

你正开始学习的,是他所谓的主导科学“,“科学中的科学“,就某些层面而言,就因为亚里士多德将这种优先考虑,加到政体之中，因此让他的政治科学,有别于今日的政治科学。

耶鲁公开课 - 政治哲学导论课程节选

If the Ax and Ay, some are positive and some are negative, this is the way by which we have learned we should combine multiples of i.

如果 Ax 和 Ay 有正有负,这就要用到我们所学过的方法,将所有 i 的倍数加起来

耶鲁公开课 - 基础物理课程节选