用“average life expectancy”造句大全,average life expectancy造句
Theaveragelifeexpectancywas40.TheaveragelifeexpectancyinZambiais38.Theaveragelifeexpectancyincreasedto71years,thesameasinmedium-leveldevelopedcountries.Untilthe1950s,theaveragelifeexpectancyinGreenlan...