human fecundity

例句：

1. 1. Human fecundity is a measure of how many children a person can have in their lifetime.
   人类的生育力是衡量一个人一生中能生多少孩子的一种指标。
2. 2. The study of human fecundity has important implications for population growth and development.
   研究人类的生育力对于人口增长和发展具有重要意义。
3. 3. The success of a family's childbirth depends not only on the mother's health but also on herhuman fecundity.
   一个家庭能否顺利分娩，不仅取决于母亲的健康，还取决于她的生育能力。