"The bad guys keep coming." "And no matter whether the apprehension rates rise or fall, the numbers of criminal aliens rise.

VOA: standard.2010.04.21

It's insulated. It's a closed system. In fact, it's an isolated system. There's no energy or matter that can go through that boundary.

系统指的，是盒子里的东西,它是封闭孤立的。

麻省理工公开课 - 热力学与动力学课程节选

He was a poet, was a Harvard professor, "What is wrong is not the great discoveries of science-- information is always better than ignorance, no matter what information or what ignorance.

他生前是一位诗人，是哈佛的教授，“错的不是科学的重大发现-,有信息永远比无知强，不管是什么样信息和什么样无知。

哈佛公开课 - 幸福课课程节选