They don't look the same, they don't behave the same, they don't perform the same biological functions.

它们外观上不一样,生命活动不一样,它们的生物学功能各不相同

耶鲁公开课 - 生物医学工程探索课程节选

When some of those lower biological functions are occurring, the body's alive.

当一些低端生理功能产生时,肉体就是活着的。

耶鲁公开课 - 死亡课程节选