It allows you to define the concept of a thermometer. You have three objects, one of them could be a thermometer.

从热的物体流向冷的物体,由此我们可以定义温度，我们还可以用它来定义温度计：

麻省理工公开课 - 热力学与动力学课程节选

I could consume all of my income-- if I borrow against my future income, I could-- there's a problem here of starvation.

我可以选择花掉所有的收入,如果我用未来的收入作担保借钱...,不过我们还得考虑吃饭问题

耶鲁公开课 - 金融市场课程节选

The examples we've done so far have been pretty straightforward, so we haven't needed to use formal charge to make this kind of decision.

我们之前做过的例题,都是非常简单直接的，因此我们还不需要,用形式电荷来做这种决定。

麻省理工公开课 - 化学原理课程节选

We put it more graphically before but that's fine. Two more outcomes.

这条我们用矩阵表示的,还差两个

耶鲁公开课 - 博弈论课程节选

And we think the brain activation, we can use that to predict financial choice, but beyond that, we can actually use it in some symptom profiles in mental disorders.

我们认为，我们可以通过大脑活动，来预测金融决策，但不仅如此，我们还可以用它来监测精神疾病的病情。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Now, we can't do that yet with humans.

现在我们还不能将这个用在人身上。

耶鲁公开课 - 死亡课程节选

The mind is based in, or just is something nonphysical, something nonmaterial, we can call it a mind we can call it a soul we can call it a psyche we typically try to call it a soul.

心灵建立在...或仅仅是非物理的东西,非物质的某种东西,我们可以把它称作心灵,也可以叫灵魂,还可以说是精神,但我们一般用灵魂来命名它

耶鲁公开课 - 死亡课程节选

It's kind of ironic that we put this in the same lecture as we talk about atomic radii, which we also call r, but they're two different r's, so you need to keep them separated in terms of what you're talking about.

有点讽刺的是,我们在同一堂课里还讨论过了原子半径，它也是用，r，表示的，但是它们具有不同的意义，因此大家需要注意区分它们,弄清楚我们讨论的是哪一个。

麻省理工公开课 - 化学原理课程节选

So you know that x-rays are higher frequency than UV light, for example, that means it's also higher energy than UV light, and if you think back to our photoelectric effect experiments, do you remember what type of light we were usually using for those? Does anyone remember?

你们知道，X，射线的频率比紫外光高，这意味着，它的能量也比紫外光要高，那么，请大家回想一下我们的光电效应实验，大家还记得当时我们用的是什么光源吗？,有人记得吗？

麻省理工公开课 - 化学原理课程节选