来自《耶鲁大学开放课程：博弈论 第2集 第2集》

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  the choice they're going to be for the attacker which pass to choose,
  入侵者选择从哪个途径入侵
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  and for the defender which pass to defend.
  而防卫者选择在哪里设防
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  But let's put down some payoffs so we can start talking about this.
  但我们需要搞清收益后才能分析此博弈
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  So in this game, the payoffs for this game are going to be as follows.
  这个博弈的收益是这样的
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  It's a simple two by two game.
  这是一个简单的二对二的博弈
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  This is going to be the attacker, this is Hannibal,
  这个是入侵者 即汉尼拔将军
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  and this is going to be the defender,
  这个是防守者
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  and I've forgotten which general was defending
  我忘了哪位将军是防守者
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  and someone's about to tell me that.
  最好有人来告诉我
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  And there are two passes you could defend:
  你要选择两条途径中的一条设防
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  the easy pass or the hard pass.
  平坦之途的或崎岖之途
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  And there's two you could use to attack through,
  同样他也有两条路入侵途径