"UNASUR is doing some excellent work in integrating efforts in the region around things like energy and security.

VOA: standard.2009.04.18

A lot of the work is done by Robert Provine who summarizes this in his excellent book Laughter.

很大研究都是Robert，Provine做的,他在一本很好的书《笑》中总结了他的研究。

耶鲁公开课 - 心理学导论课程节选