And this exercise of being able to work In these three different modes, economic intuition, graphs, and kind of nerdy high school math is a lot of what we want to get you used to as Economic Majors, just to be able to translate easily between those.

这个练习可以用,三种不同的方法解决,即,经济直觉,图表,和一些讨厌的高中数学,希望经济学专业的同学能掌握这些方法,对于这些方法能够随手拈来

耶鲁公开课 - 博弈论课程节选

And we do two to three concerts per year. We have two rehearsals a week.

我们每年举行二到三次音乐会。每周练习两次。

积极参与俱乐部活动 - SpeakingMax英语口语达人

We practice six days a week, usually, you know, three to four hours a day,

通常我们每周练习六天，你知道，每天三到四个小时，

赛艇项目很流行 - SpeakingMax英语口语达人