The contraceptive prevalence rate of married women of childbearing age reached 83%, and the average family size has decreased from 4.84 members in 1971 to 3.63 members in 1998.是什么意思_The contraceptive prevalence rate of married women of childbearing age reached 83%, and the average family size has decreased from 4.84 members in 1971 to 3.63 members in 1998.在线翻译_英语_读音_用法_例句