美国巴尔的摩马里兰大学的罗伯特·普鲁文斯和他的同事做过一项典型的研究。根据他的研究，笑是一件极其严肃的事情。

According to a classic study of laughter by Robert Provine of the University of Maryland, Baltimore County, and his colleagues, laughter is an unexpectedly serious business.

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这种笑有一项任务，它负责向巴黎人证实狂欢节的来临。

This laughter has a mission. It is charged with proving the Carnival to the Parisians.

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最新的一项研究发现，积极的重新审视——换种眼光看待事物——对日常生活中的小挫折付之一笑，是让人在一天结束后心满意足的好方法。

A new study finds that positive reframing -looking at a thing in a different light -and perhaps laughing about life's daily small setbacks is an effective way to feel satisfied at the end of the day.

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Well, a smile is just a way of talking about the ability of the body to do something.

笑就是我们表达,肉体某项能力的一种方式

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