我们去商场吧。
每周3次在上班或去商场途中快走。
“我每次去商场都会被认出来,”他说。
It's even better than going to the mall-- so many, 3000 classes to choose from.
比去商场更过瘾-,有三千门课程任你挑选。
He decided to send himself and his students to different places including shopping malls and observe when people laughed and write down what made them laugh.
除了他自己,他还派他的学生,去各种各样的地方,包括购物商场,观察人们在什么时候会笑,并写下让他们笑的原因。
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