You're looking at it and feels like someone's over your shoulder talking in your ear, as opposed to someone at the blackboard, that's distant from you."

VOA: standard.2010.03.26

Who took a ball, the vesicle, and he transplanted from the embryo, the ear region, to a limb.

他从胚胎的耳朵部分中,取出一个泡囊移植到腕部。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

First is that the ear develops from the surface layer of the embryo.

耳朵是由,胚胎的外胚层发育来了。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

And I mentioned that the ear develops from a little ball.

前面我曾说过,耳朵是由一个小小的泡囊发育而来的。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选