Terence H. Hull(1990), Recent Trends in Sex Ratio at Birth in China. United Nations, Economic and Social Commission for Asia and the Pacific.是什么意思_Terence H. Hull(1990), Recent Trends in Sex Ratio at Birth in China. United Nations, Economic and Social Commission for Asia and the Pacific.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句