total fertility rate meaning in English

总和生育率
总怀孕率
总生育率

Expectation of life at birth and total fertility rate
出生时平均预期寿命及总和生育率
Total fertility rate refers to the average number of children that would be born alive to 1 000 women during their lifetime if they were to pass through their childbearing ages 15 - 49 experiencing the age specific fertility rates prevailing in a given year
某年的总和生育率是指一千名妇女，若她们在生育龄期(即十五至四十九岁)经历了一如该年的年龄组别生育率，其一生中活产子女的平均数目。