the zeroth law, which is the common-sense law, which says that if you take a hot object next to a cold object, heat will flow from the hot to the cold in a way that is well defined, and it allows you to define temperature.

上节课我们讨论了，热力学第零定律,这一定律源自常识：如果把一个热的物体,与一个冷的物体挨在一起，热量就会以确定的方式。

麻省理工公开课 - 热力学与动力学课程节选

I can take a heat pack, like the kind you buy at a pharmacy. Break it up. It gets hot.

买来的热装罐在里面打破,它就变热了。

麻省理工公开课 - 热力学与动力学课程节选

So we'll take Flaming Hot Cheetos up there, and later in the class I'll play you a very cute clip from NPR about kids eating Flaming Hot Cheetos in schools.

我们以火焰辣奇多为例,稍后我会播一个来自于全国公共广播网的,关于孩子们在学校里吃火焰辣奇多的短片

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选