that nobody in the history of the world has done.

历史上从未有人做过的研究
He decided to send himself and his students to different places

他决定和他的学生一起到不同的地方
including shopping malls and observe when people laughed

包括大型购物中心观察人们什么时候笑
and write down what made them laugh. And this is the first descriptive step

并记录下是什么令他们笑的这是发展笑的理论的
to developing a theory of laughter. And his big finding is

第一个描述性的步骤他有个重大的发现
that you could separate people-- you could separate the question of laughter

就是你可以区分人们区别这笑声
from the question of a joke or the question of humor.

是来自笑话或是来自幽默
Most of what people--what made people laugh

令大多数人笑的
wasn't in any sense a joke or humorous.

并不是笑话或幽默
So, he had over a thousand laughter-initiated situations

他总结了超过一千多种能引起笑的情境
and here are some typical comments that initiated laughter,

这里有一些能引起人笑的典型句子
sometimes uproarious laughter, on the parts of people.

会令一部分人捧腹大笑