Total fertility rate refers to the total number of births a women would have by the end of her childbearing period if she were to pass through those years bearing children at the currently observed age specific fertility rates.
19. 总生育率是指，按当前观察到的特定年龄组生育率，一个妇女如果能够活到其生育期结束，她在那之前的总生育数量。