词典释义：
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Which suggests either a remarkable passivity among the, I assume, 24 to 36 residents of this building, based on the number of mailboxes and given typical urban population density or a shared delusion of functionality.
这就说明要么这楼的24到36户人家，我假设的，基于邮箱的个数和典型的城市人口密度得出的都特别懒散，要么都同时产生功能性错觉。
《The Big Bang Theory Season 2》《生活大爆炸 第二季》
双语例句
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The region has a very high population density.
这一地区人口密度很高。
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The population density of that country is 685 per square mile.
那个国家的人口密度为每平方英里685人。
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It's about population density.
这是个人口密度问题。
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The map has color-coded indicators for population density.
这副地图上，不同的人口密度具有不同的有色指示符。
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The increasing population density will even further congeal traffic.
日益增加的人口密度将使交通更加瘫痪。