Two quotations, the first the president Bush " "Passing a new growth package is our most pressing economic priority."

下面是两个引述，第一个来自布什总统,“一个新的一揽子增长计划迫在眉睫“

斯坦福公开课 - 经济学课程节选

I'm pressing on the gas. So I expect that to be a positive number. The pressure is constant 0 p. The V goes from V1 to zero.

我们对气体加压,所以这应该是一个正数,压强是常数，p，V从V1变成。

麻省理工公开课 - 热力学与动力学课程节选