来自《耶鲁大学开放课程：博弈论 第8集 第8集》

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  if too many people choose the same town.
  如果选择同一个城镇的人太多怎么办
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  So if there's no room in a town,
  如果一个城镇已经住满了
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  for example, if too many people chose East Town
  假如说选择东镇的人太多了
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  then we allocate the surplus randomly.
  那就随机分配这些人
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  We ration the places randomly.
  我们按照概率进行随机分配
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  So then, we then randomize to ration; people understand that?
  按照概率进行随机分配 懂了吗
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  So, for example, there's 100,000 places in East Town,
  比如东镇只能容纳十万人
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  so if 150,000 people chose East Town,
  但是如果有十五万人选择东镇
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  you're going to have a 2/3 chance of getting into East Town
  那么你有2/3的概率能住在东城
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  and the rest of you is going to be allocated to West Town.
  其余的人都被分配到西镇
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  Does that make sense?
  听懂了吗
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  I just need something to make things add up.
  我得先把这些给大家解释清楚了