So, when I threw that thing up and you caught it, what you are doing mentally was immediately figuring out where it started and at what speed.

所以当你接住我抛出的物体时,你大脑里的反应就是,立刻弄清它的初位置以及初速度

耶鲁公开课 - 基础物理课程节选

When you live together with Americans, so with English people.

当你和美国人住在一起的时候，相当于说英语的人。

英语学习就要这样 - SpeakingMax英语口语达人