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人口普查——对一国范围内人口数的计算——对于现代国家的政府来说,已经成为一项不可缺少的事务了.一个国家有多少人民?他们的社会经济特征是什么?他们分布在什么地方,并怎样受到社会的、生物的变化的影响?这些问题,所有工业发达国家的政府天天都要遇到,至于发展中国家就更不用说了.
The census - a calculation of the population within a country - has become an indispensable task for the governments of modern countries. How many people are in a country? What are their socio-economic characteristics? They are distributed in Where and how they are affected by changes in society and biology? All these problems are faced by the governments of all industrialized countries day after day, not to mention the developing countries.