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九旬是多少岁
更新时间: 2019-03-25 00:00:00  

九旬指的是80~90岁。满了八十岁,就是九旬开始之第一天。故八十寿日即称九旬开一。满三十,称四旬开一;满四十称五旬开一,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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