You don't even know that you are doing this but you do it quickly and instinctively.

你甚至都不知道自己在理解语言,但你却能够快速且本能的做到。

耶鲁公开课 - 心理学导论课程节选

I couldn't and you couldn't either but lots of people have.

你我是都不行,但曾经很多人做到过

耶鲁公开课 - 欧洲文明课程节选