那就較個真

來源: 於 2024-12-16 00:33:01 [舊帖] [給我悄悄話] 本文已被閱讀：次

According to historical analyses, the average life expectancy at birth in the U.S. around 1800 was approximately 43 years. If the child survived the age of ten, this person could live to his 60s.