If you hook a soul up to a body, you can tell the soul was there, by what the body is doing.

如果你通过身体探测灵魂，你可以知道灵魂在那，根据身体在干什么。

耶鲁公开课 - 死亡课程节选

If you hook a radio wave up with a radio, you can tell the radio wave was there because what the radio is doing?

如果你用收音机检测无线电波，你可以知道无线电波在那,因为收音机在干什么？

耶鲁公开课 - 死亡课程节选