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A hearty, belly laugh means the same thing on every continent: joy. But when we laugh with someone else, our chuckles may divulge more than we realize. 每一个大洲，发自肺腑的捧腹大笑都意味着同一件事，即快乐。但也许我们不曾留意，我们和他人一同笑的时候，笑声会出卖我们。 Scientists have found that people around the world can tell whether folks are friends or strangers by listening to them laughing together. And the ability transcends culture and language. 科学家们发现，世界各地的人都可以辨别出一起笑的人是友人还是陌生人。而这一能力跨越文化与语言。 | 
