Now think of another product in American history that doubled every decade for four decades, and then imagine that that product became the country's, without question, absolute largest export.

思考下在美国历史中有没有另一种产品曾,有如此辉煌的成就,那么这个产品将毫无疑问地,成为美国最大的出口产品

耶鲁公开课 - 美国内战与重建课程节选

The phenomena is known as "emotional contagion, where if you're facing somebody, for instance, and they're they look at you in a face of absolute rage, it is very difficult to just sit there without your own face molding in accord to their own.

这种现象就是情绪感染，例如，你看着某人，他们怒气冲冲看着你，你很难只是坐在那里,不去回应他们的愤怒。

耶鲁公开课 - 心理学导论课程节选