Population Ageing level人口老龄化水平
Population Ageing and Health人口的老龄与健康
the population ageing人口老龄化
population ageing in china中国人口老龄化
population ageing detail高龄化
population ageing living人口老龄化
technical meeting on population ageing人口老龄化问题技术会议
Population ageing and public debt crisis have prevented the developed economies from achieving a solid recovery.
人口老龄化和债务危机,成为限制发达国家经济增长的重要因素。
参考来源 - 美国持续量化宽松政策和主权债务困境