populations age翻译

populations age的基本解释

读音: 美: 英:

人口年龄：指一个地区或国家的人口在某一时期的年龄结构。

例句

That is beginning to cause huge demographic problems, as populations age with startling speed.这正在开始造成严重的人口问题，因为人口以惊人的速度在老化。
Fully developed, mature, post industrial societies, such as those in Europe, are characterised by stable or declining populations which are increasing in age.完全发达成熟的后工业社会，如欧洲的社会，其特点是人口稳定或下降，而老龄化却在增加。
The estimate is the first to cover the entire United States instead of select populations according to location or age, said the study authors from Johns Hopkins University.这次的估算还是第一次涵盖了全美而不是根据地区和年龄选择部分人口做调查，来自约翰霍普金斯大学的研究报告作者这样说道。
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