人口老龄化 rénkǒulǎolínghuà aging of the population Definitions Defs Origin Strokes Stroke Words Sentences Sents 人口老龄化 人口老齡化 rénkǒulǎolínghuà aging of the population The process by which the proportion of elderly people in a country or region increases; population aging
人口老龄化 人口老齡化 rénkǒulǎolínghuà aging of the population The process by which the proportion of elderly people in a country or region increases; population aging
