Well this third picture you can't probably see too much about but you probably recognize what it is, right?

第三张图可能你们没见过了,但你们能认出这是什么,对吧

耶鲁公开课 - 生物医学工程探索课程节选

Slide one. Slide two. Slide three.

第一张，第二张，第三张。

耶鲁公开课 - 心理学导论课程节选