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 de·mog·ra·phy /dɪˈmɑgrəfi/
 人口統計學

 de·mog·ra·phy /dɪˈmɑgrəfɪ/ 名詞
 人口學,人口統計學,種群統計學

 de·mog·ra·phy n.  The study of vital statistics, such as births, deaths, marriages, mortality, health, etc., in populations and subgroups of populations. -- Dem*o*graph*ic, a.
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 demography
      n : the branch of sociology that studies the characteristics of
          human populations [syn: human ecology]