来自《耶鲁大学开放课程：现代社会理论基础 第23集 第23集》

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  Why don't you think about Southern California? Right?
  比如说南加州
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  Southern California,
  在欧洲人踏上
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  before the Europeans appeared on the scene, right,
  这片土地之前
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  was a very dry climate--
  气候非常干燥
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  suffered from the lack of water resources.
  饱受缺水之困
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  So the Los Angeles Basin probably could accommodate
  因此洛杉矶盆地可能只能容纳
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  a livelihood for something like 20,000 people. Right?
  约两万人生活
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  These 20,000 people, right,
  这两万人
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  lived in this very arid environment,
  就居住在这片不毛之地
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  used very elementary technologies,
  采用的是非常初级的科学技术
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  and had a very limited division of labor.
  劳动分工非常有限
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  So the population size
  所以人口规模