This week on our program, we look at musical diplomacy, past and present.

VOA: special.2010.06.21

I also want to assume for our present purposes that there's only pressure volume work going on, which is to say I want to put pdV p dV in here minus p dV for dw.

同时假定,对于我们目前的目的而言，只有压强做功这就是说,我要把这里的dw替换为负。

麻省理工公开课 - 热力学与动力学课程节选

"Even as we reflect on the hope of our history, we must also face squarely the reality of the present a reality marked by unfairness, marked by hardship for too many women in America."

VOA: standard.2010.03.08