Background:According to the data of the fifth population census in china,the families that old people above 65 account for 20.9%of china's total population.
研究背景:据全国第五次人口普查资料显示,2000年有65岁以上老年人的家庭户占全国家庭户总数的20.09%。
参考来源 - 包头市城区空巢老年人生活质量研究Population census is an important source of national and provincial urban population data.
人口普查是全国和各省区城镇人口数据的重要来源。
参考来源 - 期刊学术社区·2,447,543篇论文数据，部分数据来源于NoteExpress
At the same time of population census, the age structure of wintering common cranes had also been examined.
在进行种群数量调查的同时，还对越冬灰鹤种群的年龄结构进行了探讨。
Wednesday’s population census, the first for 10 years, shows both the soundness and the flaws in their reasoning.
周三公布的十年一次的的人口普查结果, 显示了他们这一逻辑的合理性与缺陷.
The results of a decennial population census by the National Bureau of Statistics in 2010 shows they might be right.
国家统计局在2010年进行的10年一次的人口普查结果表明，他们的话或许是对的。
Within around thirty years the Census Bureau expects racial and ethnic minorities to form the majority of America's population.
VOA: special.2010.03.20
But first we report on American efforts to get Hispanics to take part in the population count called the census.
VOA: special.2010.05.07
In the last national census, or population count, Hispanics,or Latinos, made up twelve percent of the total population.
VOA: special.2010.05.07
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