And to give you a size perspective, that is about the size of my pinky finger nail, 4 mm on the side.

这个芯片，有我的手指甲那么大，边长4毫米。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

00 times electrode is only 1 mm long that penetrates just the most outer layers of the outer regions of your brain called into the distributable cortex.

00个这样的电极只有1毫米长,他们插进大脑最外层的区域的最外层,这个区域被称为分布皮层。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选