So I've got, this piston here is compressed, and I slowly, slowly increase the volume, drop the temperature.

这样，这个活塞就被压缩了，然后我再很慢很慢地增加它的体积，降低温度。

麻省理工公开课 - 热力学与动力学课程节选

We're going to drop the pressure, the volume is going to go up.

我们会降低压强，体积就会变大。

麻省理工公开课 - 热力学与动力学课程节选