来自《耶鲁大学开放课程：博弈论 第4集 第4集》

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  Okay, so that was our example for the day
  好了 这就是我们今天的案例
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  and our first brush with reality for the day.
  也是我们今日理论联系实际的内容
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  Let's clean the board and do some work.
  我擦下黑板然后我们讲别的了
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  Do a bit more formal stuff here.
  我们讲点正经事儿
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  So here we have an example but
  这就是我们今天的案例了
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  I want to go back to the generality and to a bit of formalism.
  我还是回头很形式主义地概括一下吧
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  By the way, I should tell you that the game ended nil-nil or 0-0.
  顺便提一嘴 比赛的结果是0比0
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  It's a moral victory for me I think.
  对我来说还算个精神胜利吧
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  So I want to be formal about these things i've been mentioning informally.
  我想正式地描述一下我之前随口说的事
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  And in particular,
  尤其是
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  I want to be formal about the definition of best response.
  我想给出最佳对策的正式定义
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  I'm going to put down two different definitions of best response,
  我写出最佳对策的两种不同形式定义