For these purposes think about a channel, it only allows sodium to go through for example.

基于此目的,我们来讲离子通道,拿仅允许钠离子通过的通道作为例子

耶鲁公开课 - 生物医学工程探索课程节选

It'll probably be the last example I have time for and so I'll go through the rest of them quickly in the next lecture.

因为时间关系,这可能是最后一个例子,下节课我会快速讲完剩下的内容

耶鲁公开课 - 生物医学工程探索课程节选

Well, the mechanism that the cell uses to transmit information along itself, along this process which goes from my brain to my fingers, for example, is through an electrical signal called an action potential.

神经细胞沿突起,将信息从我的大脑传递到,手指的机制是,举例来说,是通过一种称为动作电位的电信号的作用

耶鲁公开课 - 生物医学工程探索课程节选