来自《耶鲁大学开放课程：博弈论 第2集 第2集》

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  No, you look all right: all rightish.
  没有 我看大家很冷静
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  Let's have a look at another example.
  那我们再来看另外一个案例
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  People okay, I can move this?
  你们记完笔记了吗 我要换黑板了
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  All right, so it's a slightly more exciting example now.
  好的 这是一个更有趣的例子
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  So imagine the following example,
  想象一下这样的例子
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  an invader is thinking about invading a country,
  一个侵略者打算入侵一个国家
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  and there are two ways -- there are two passes if you like --
  有两条路 想象成两个关口也行
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  through which he can lead his army.
  侵略者必须通过一个才能进入
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  You are the defender of this country
  你是国家的防御者
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  and you have to decide which of these passes
  你必须决定在哪个进入关口
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  or which of these routes into the country,
  或者在哪条进军路线上
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  you're going to choose to defend.
  布置你的防线