demographers

Selectivity of human migration long been the focus of demographers and economists.

人口遷移的選擇性一直以來都是人口學家和經濟學家關注的焦點.

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In the public's eyes , demographers have a checkered reputation.

民眾對人口統計學者的評價不一.

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Demographers talk about a " low - fertility trap "

人口學家稱之為 “ 低生育陷阱 ”

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Demographers reckon that at least three - quarters of Egyptians actually live in urban areas.

人口統計學家認為,至少有四分之三的埃及人實際上是生活在城市.

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Demographers say a rate of 2.1 is needed to keep a population from declining.

人口統計學家指出,生育率必須達到2.1,才能防止人口減少.

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Selectivity of human migration has long been the focus of demographers and economists.

摘要人口遷移的選擇性一直以來都是人口學家和經濟學家關注的焦點.

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Demographers have calculated that the world's population will double by the end of the twentieth century.

人口統計學家推算到了二十世紀末世界人口會加倍.

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