平均年龄是统计概念.一半人可活得比平均长.多少人可活到几岁由统计分布决定活到100的也可能但机率很低.波教授好像也没搞懂概念
本帖于 2021-12-02 11:01:54 时间, 由普通用户 DSc 编辑
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