马尔萨斯在《人口论》一书中,施用的有关人口分布(PopulationDistribution)、人口重心(Center of Population)、人口疏密程度(Population Density)、人口计数(Population Statistics)、人口普查(Census)等概念和方法,直至现在仍在广泛...
A centerofpopulation, commerce, and culture; a town of significant size and importance.
人口、商业和文化的中心;一个大规模和重要的城镇。
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If the virus had been capable of spreading through the air, or if one infected person had unknowingly entered a large populationcenter, Ebola might have become a worldwide epidemic.