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四旬是多大

更新时间: 2021-12-10 10:39:18     

十岁为一旬,比如,四旬是40岁,八旬即80岁。在诗、联中常用。随着全球人口平均寿命的延长和老龄化的加剧,WHO对年龄分期进行了重新划定,规定44岁以内为青年人,45~59岁为中年人(壮年期),60~74岁为年轻老人,75~89岁为真正老人,90岁以上为长寿老人,100岁以上为百岁老人。

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