And the trick to a puzzle box is there's a simple way to get out but you have to kind of pull on something, some special lever, to make it pop open.

这个谜笼的设计是这样的,只要小猫拉动一个东西,它就能够逃出去，拉动一个特殊的杠杆，迷笼就会打开。

耶鲁公开课 - 心理学导论课程节选

There's all these pleasures of experiencing art and seeing a beautiful sunset. And I don't know about you, but at least when I imagine the rat lever thing, it's a sort of simple, undifferentiated pleasure.

体验艺术是快乐的,观赏美丽的日落是快乐的，我不了解你们，但当我想象老鼠杠杆时，那是一种简单，单调的快乐。

耶鲁公开课 - 死亡课程节选