婴儿死亡率 yīng'érsǐwánglǜ infant mortality rate Definitions Defs Origin Strokes Stroke Words Sentences Sents 婴儿死亡率 嬰兒死亡率 yīng'érsǐwánglǜ infant mortality rate the number of deaths per one thousand live births in a given period of time
婴儿死亡率 嬰兒死亡率 yīng'érsǐwánglǜ infant mortality rate the number of deaths per one thousand live births in a given period of time
