人均寿命反映一个国家人民生活质量的好坏，其它都是浮云。

来源: 于 2011-11-13 21:45:57 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

从人均寿命看，美国全世界排名第50位，的确是个二流发达国家

Life expectancy at birth is also a measure of overall quality of life in a country and summarizes the mortality at all ages.

https://www.cia.gov/library/publications/the-world-factbook/rankorder/2102rank.html