Life expectancy - Wikipedia, the free encyclopedia

Life expectancy - Wikipedia, the free encyclopedia

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日期:2024-07-07
Life expectancy is a statistical average of the number of years a human is expected to live; this will vary according to region and era. In the Bronze and Iron Age life expectancy was 26; the 2010 world average was 67.2. In Swaziland the average is 49.42 ...看更多