来自《耶鲁大学开放课程：心理学导论 第7集》

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  Interposition.
  对象重叠
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  You take the guy.
  以这个人为例
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  How do you know the guy is standing in front of the house?
  你怎么看出他站在房子前面的呢
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  Well, because there is--
  因为 这里显示
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  you see all of him
  你看到了他整个人
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  and he's blocking a lot of the house.
  而他挡住了部分的房子
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  There's relative size.
  还有相对大小
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  How far away am I?
  我离你有多远呢
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  Well, if you looked at me and you had to estimate
  你看着我便能估算出
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  how far away I am,
  我离你有多远
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  part of the way you'll figure that out
  你能够成功估算出来的一种途径
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  is you know how tall a human's supposed to be.
  是你知道一个人大概有多高