We're going to come back and talk about the action potential a little bit more when we talk about how the heart works, because the heart when its contracting, the muscle cells also use action potentials to initiate contraction.

我们讲心脏工作原理时,会回头再多讨论一点动作电位,因为心脏收缩时,肌肉细胞也利用动作电位来启动收缩

耶鲁公开课 - 生物医学工程探索课程节选

There's nothing like seeing the whole action flowing back and forth.

这远比不上亲眼看到整个来回的流畅动作。

现场观看篮球赛 - SpeakingMax英语口语达人