And this is the reason why enthalpy was invented and why it's so important. Because we want to know this. So this for a finite change.

这也就是为什么焓要被提出,而且如此重要的原因,因为我们想要知道这些。

麻省理工公开课 - 热力学与动力学课程节选

Because if the change was not possible on the individual level, ? on the society level,why am I doing what I am doing?

因为如果从个人层面或社会层面来说，改变都是不可能的，那我在这里干什么？

哈佛公开课 - 幸福课课程节选

That's why you change your shock absorbers in your car.

这也就是你定期更换爱车的减震器的原因

耶鲁公开课 - 基础物理课程节选

Then someone says, hey why don't we just change it?

有人提出,为什么不换个方式呢

耶鲁公开课 - 金融市场课程节选

Why the change in infectious diseases?

为什么感染性疾病致死率发生了变化

耶鲁公开课 - 生物医学工程探索课程节选

Why do we have to change chords?

为什么我们要改变和弦？

耶鲁公开课 - 聆听音乐课程节选

So you start with your basic model, then you add in, you enrich the model, and you see if the results change, and that'll help you explain why you're getting different results in different settings.

你们从最原始的模型开始,加入约束条件来丰富这个模型,然后检验结果是否有变,这能帮助我们解释,为什么在不同条件下结果是不同的

耶鲁公开课 - 博弈论课程节选

Why do we change chords?

为什么改变和弦呢？

耶鲁公开课 - 聆听音乐课程节选

Why? Because let's change human nature.

为什么？让我们来改变人类本性。

哈佛公开课 - 幸福课课程节选