优化人口结构，延缓老龄化，保持人口优势
To improve China's population structure, slow down the trend of aging, and maintain China's demographic advantage.
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安全问答是一个知识全球问答,包含丰富的问答知识
To improve China's population structure, slow down the trend of aging, and maintain China's demographic advantage.
原文地址: https://www.cveoy.top/t/topic/nALl 著作权归作者所有。请勿转载和采集!