进口老龄化(Population Aging)又称“进口老化”。进口老龄化的水平取决于衰亡率和出生率(除去进口迁移身分)，而出生率的下绞ё衮是加速进口老龄化的首要身分。
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rural population aging 农村老龄化
aging population 老年人口 ; 老龄化人口 ; 老龄化的人口
population-aging 人口老年化
About Population Aging 论人口老化问题
population aging crisis 人口老龄化危机
population aging process 人口老龄化进程
population aging problems 老年人口问题
pace of population aging 人口老龄化速度
Secondly, the population aging decreased the rate of economy.
其次,中国人口老龄化降低了经济稳态增长率的水平。
参考来源 - 中国人口老龄化的经济增长效应分析Population aging is the objective law of social development , and it is not changed with man?
人口老龄化是社会发展的客观规律，它的出现是不以人的意志为转移的。
参考来源 - 日本适应人口老龄化的社会保障制度改革·2,447,543篇论文数据，部分数据来源于NoteExpress
The closer a society's population growth rate gets to zero, the more population aging it will be.
一个社会的人口增加率越接近零，其人口便愈老龄化。
The outflow of labor has exacerbated the rural population aging and the elderly living in rural areas had a major impact.
劳动力外流加剧了农村人口的老化，并对农村老年人的生活产生了重要影响。
Nosociety has ever experienced the speed of population aging -- or the genderimbalance -- now seen throughout Asia. So we can't simply look to history topredict Asia's future.
没有哪个国家经历过亚洲这种速度的老龄化，也没有哪个国家经历过亚洲这种性别失衡，因此我们不能简单地根据历史预测亚洲的未来。
Rising costs and an aging population also put extra demand on the system,and this worries health providers, says Kersting.
VOA: standard.2009.09.28
But the critics and supporters agree one of the British national health service's biggest challenges, as it enters its seventh decade, are the mounting cost of new technology and medicines, and an aging population.
VOA: standard.2009.09.24
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