The baby is being approached, goes like this , smiles like this , and then the aversion .

有人走近这个婴儿，像这样，眉毛上挑凝视，开始微笑，像这样笑，大笑头偏向左，然后是讨厌的人，大笑头避开。

耶鲁公开课 - 心理学导论课程节选

So, he had over a thousand laughter-initiated situations and here are some typical comments that initiated laughter, sometimes uproarious laughter, on the parts of people.

他收集了一千多个引起笑的情景,这里列出一些普遍能引人发笑的话，有些能让某些人轰然大笑。

耶鲁公开课 - 心理学导论课程节选

Children are particularly influenced by the contagiousness of laughter, but just in general, if you hear somebody laughing, like the kids you saw before, it's the sort of thing that could easily make you laugh.

孩子特别容易,受笑声的感染，但普遍来说，如果你听到有人笑，像你们刚才看到的小孩子，这样的事物很容易引你大笑。

耶鲁公开课 - 心理学导论课程节选

This is what--this is where the humor for that baby comes in, which is you couldn't predict when the sound was coming and some aspect of that was what made it so funny then, what elicited the laughter.

这就是…,为什么那些婴儿那么好笑，因为你猜不到他们什么时候会笑,因此我们才觉得好笑，引起我们大笑。

耶鲁公开课 - 心理学导论课程节选