来自《耶鲁大学开放课程：博弈论 第7集 第7集》

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  And this exercise of being able to work
  这个练习可以用
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  In these three different modes,
  三种不同的方法解决
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  economic intuition, graphs,
  即 经济直觉 图表
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  and kind of nerdy high school math
  和一些讨厌的高中数学
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  is a lot of what we want to get you used to as Economic Majors,
  希望经济学专业的同学能掌握这些方法
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  just to be able to translate easily between those.
  对于这些方法能够随手拈来
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  Again, I apologize for going too fast
  再次 我为我讲得太快而道歉
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  but it's still a useful exercise I think,
  但它仍然是个有用的练习
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  so have a look at it in the book.
  所以要好好看看课本中的内容
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  Now back to the lessons and away from the nerdiness a second,
  现在暂时别管那些 回到课上来
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  what did we learn?
  我们学到了什么
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  Well at the end of the day we learned
  在上次课结束时 我们学到了