人口的快速增长会以各种方式影响社会。

Rapid population growth affects the society in various ways.

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根据最近发表的一项关于人口的研究，如果老年人要对社会作出贡献而不是成为经济负担，就必须给他们更多学习机会。

Older people must be given more chances to learn if they are to contribute to society rather than be a financial burden, according to a new study on population published recently.

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无法更新迭代其人口的社会阻碍了投资和创新。

Societies that cannot replace their populations discourage investment and innovation.

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No. 2, we believe that young people have to be a key part of building that ethos One of the reasons for that is purely demographic.

其次，我们认为青年人,必须成为建立该社会风气的主力,其中的一个原因,纯粹是从人口统计学来考虑的。

普林斯顿公开课 - 人性课程节选

All of those slave societies had a population of slaves that was from one-quarter to one-half, and sometimes more, of the total population.

这些奴隶社会的奴隶人口都占总人口,的三分之一到一半,有时甚至更多

耶鲁公开课 - 美国内战与重建课程节选

What is inescapable is farmers are a sociological category of people, different from non-farmers in all kinds of critical ways, and it is just an example of how this whole business has disappeared.

不可否认的是,农业人口是一种社会学对人口的分类,和非农业人口是完全不同的,这只不过是,整个产业走向消亡的一个例子罢了

耶鲁公开课 - 古希腊历史简介课程节选