They show these as some of the first stages and then intermediate changes they depict it as this, and then the final one is this.

把这定义为第一阶段,这是中间阶段,再是最终阶段

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The balance of sodium movement relative to potassium movement changes because there's this resting movement of all these molecules anyway, but that balance changes dramatically when these ion - when these gated ion channels open.

钠钾各自运动始终保持动态的平衡,因为尽管在静息状态,所有这些离子也在运动,但是平衡的剧烈变化,只发生在这些门控离子通道打开的时侯

耶鲁公开课 - 生物医学工程探索课程节选