So thermodynamics, based on these four laws now, requires an edifice, and it's a very mature science, and it requires that we define things carefully.

热力学是一座，建立在这四条定律上的大厦,它是一门非常成熟的科学，也要求我们在定义东西时非常小心。

麻省理工公开课 - 热力学与动力学课程节选

So, this will remind you that physics is, after all,an experimental science and you will be able to see where all the laws of physics come from.

因此,实验能提醒你,物理毕竟是一种实验科学,这样你就能明白所有的物理定律是从何而来的

耶鲁公开课 - 基础物理课程节选