While many are getting the health benefits and changing their quality of life, the question is how do we actually bring world peace through laughter?

正当很多人渐渐得到健康的益处以及改变他们的生活品质的同时，接下来的问题是：我们如何经由笑，真正带来世界和平呢？

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How many students will recall the laughter of the classroom and always on the lookout thoughts?

多少学生会回想起课堂上的欢声笑语和求贤若渴的思绪？

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Anybody got any idea the population of Australia, how many people? (Laughter.) Just a guess.

WHITEHOUSE: President Obama & Prime Minister Gillard Visit Wakefield High School | The White House

How many people here are married? (Laughter.) For those of you who are not but intend to get married, let me just tell you -- (laughter) -- you better get used to compromise.

WHITEHOUSE: President Obama Speaks to Town Hall Meeting at University of Maryland | The White House