当猴子们一起猎杀其他动物时，它们会发生出一种笑声，黑猩猩在互相挠痒痒的时候也会发出笑声。

When monkeys get together to kill and eat somebody, they make a kind of a laughing noise and chimpanzees laugh when they tickle each other.

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他的胡须扎得她的面颊痒痒的。

His beard was tickling her cheek.

《牛津词典》

我们会在讲到关于笑的课程时，再来讨论挠痒痒的科学。

We will discuss when we have a lecture on laughter a bit of the tickle sciences.

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This was a failure because people could not go near the tickle machine without convulsing in laughter.

这是一个失败的发明,因为人们还没靠近挠痒痒的机器,就已经被它的模样逗笑了

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But we will discuss when we have a lecture on laughter a bit of the tickle sciences.

我们会在讲到关于笑的课程时,再来讨论这个关于挠痒痒的科学

耶鲁公开课 - 心理学导论课程节选

And in fact, an example of a methodological attempt was done by Henry Gleitman at University of Pennsylvania, who built a tickle machine, which was this box with these two giant hands that went "r-r-r-r."

实际上,宾夕法尼亚大学的亨利·葛雷曼,曾经进行过研究方法上的尝试,他发明了一台挠痒痒的机器,这是一个装有两只大手的箱子,双手会不停的去挠痒痒

耶鲁公开课 - 心理学导论课程节选