"I want to continue putting poetry out there. I think it's a very powerful form of expression.

VOA: special.2010.04.05

Fairly powerful statement, and that's another form of the first law of thermodynamics.

这是一个相当有用的表述,是热力学第一定律的另外一种形式。

麻省理工公开课 - 热力学与动力学课程节选

Sit-ins are a powerful form of non-violent resistance.

VOA: special.2010.01.29