when I actually transferred. I went from a very closed-minded school with a very similar dynamic.

当我真正转学过来的时候，我来自一个非常封闭，一成不变的学校，

在学校的时光 - SpeakingMax英语口语达人

When an action potential is initiated these ion channels go from their closed state to their open state, when they open sodium can now pass through.

当动作电位形成时,离子通道,从关闭状态转到打开状态,当通道打开时,钠离子就可以通过

耶鲁公开课 - 生物医学工程探索课程节选

A state where it's closed, so imagine a channel with a lid on top of it; when it's closed nothing can go through the channel, when it's open then things can go through.

一种是闭合状态,想想一个有盖子的通道吧,当盖子合上的时候任何东西都不能通过,而打开时就畅通无阻

耶鲁公开课 - 生物医学工程探索课程节选