Every time they're changing your hand is going down so chord changes may be the most powerful of all of these aspects of where the down beat is.

他们变化的时候你的手势都是向下的,所以在所有的途径当中通过和弦的变化,来判断重拍在哪儿可能是最有效的方法

耶鲁公开课 - 聆听音乐课程节选

everything changes all the time.

一切都在不断变化。

事业就是挑战 - SpeakingMax英语口语达人

That - irreversible changes happen all the time too but here I'm talking about very subtle small changes where you're changing the structure of the protein but only a little bit such that it can go back.

这种不可逆的改变时时刻刻都在发生,但我在这里想讲的是,对蛋白质结构进行微小的改变,小到这种改变是可逆的

耶鲁公开课 - 生物医学工程探索课程节选