Our temperature probably fluctuates during the day a little bit anyways, it's not very accurate. And similarly, the boiling point, defining that at a 100 degrees Celsius well that depends on the pressure.

这就不太精确,我们的体温一天之中，会有高低的变化，这一定义不够精确,类似的,我们把水的沸点定义为。

麻省理工公开课 - 热力学与动力学课程节选

And you can see what the heat involved in a process like that is as well.

你就能看到在类似这样的,过程中热量是如何变化的。

麻省理工公开课 - 热力学与动力学课程节选

It's useful to have the average acceleration, which you can find by taking similar differences of velocities.

平均加速度也是很有用的,你可以用类似方法,取速度的变化量求出来

耶鲁公开课 - 基础物理课程节选