来自《耶鲁大学开放课程：博弈论 第2集 第2集》

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  In particular, I want to develop and make sure we all understand,
  就是我希望大家都够理解
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  what are the ingredients of a game?
  博弈的要素有哪些
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  So in particular,
  具体来说
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  we need to figure out what formally makes something into a game.
  我们需要搞清楚怎么样才能形成博弈
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  The formal parts of a game are this. We need players --
  博弈由以下要素组成 参与人
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  and while we're here let's develop some notation.
  首先我们得规定一下表述法
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  So the standard notation for players,
  就是参与人的表述法
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  I'm going to use things like little i and little j.
  我们用小写i和小写j来表示吧
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  So in that numbers game,
  在那个数字游戏中
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  the game when all of you wrote down a number
  你们每个人都写下了一个数字
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  and handed it in at the end of last time,
  然后在下课前交了上来
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  the players were who? The players were you. You'all were the players.
  谁是参与人呢 你们就是参与人