Even though the signs of the enthalpy changed, and the signs of the entropy changed because it's a combination of the two that matters.

即使自由焓的符号发生变化，熵的符号也会发生变化,因为这两部分都起作用。

麻省理工公开课 - 热力学与动力学课程节选

So we can think about something I mentioned last time, which is when we're thinking about chemistry and what's really interesting in terms of chemical reactions, it's mostly valence electrons we're talking about, those are the ones that tend to be involved in chemical reactions.

我们可以考虑一下我上次提到过的一件事，那就是如果我们讨论化学,以及什么是化学反应中,真正令人感兴趣的东西，我们讨论的几乎都是价电子，它们才是在化学反应中,真正起作用的部分。

麻省理工公开课 - 化学原理课程节选

Because positive psychology may mean that we are only focusing on the positive and what works, ignoring all the rest that are not.

因为积极心理学可能表示,我们只聚焦于积极的起作用的部分，忽略其余不起作用的。

哈佛公开课 - 幸福课课程节选