“笑是欢乐，是积极地参与生活，”鲍林格林大学（Bowling GreenUniversity）心理学教授亚普·潘克斯普（JaakPanksepp）说。

"It's joy, it's positive engagement with life, " said Jaak Panksepp, a Bowling Green University psychology professor.

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鲍林格林：美国俄亥俄州西北部一城市，位于托利多西南偏南。鲍林格林州立大学（创办于1910年）座落于此。人口28，176。

A city of northwest Ohio south-southwest of Toledo. Bowling Green State University (established 1910) is located here. Population, 28,176.

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