fertility rate

n. 人口出生率, 生育率

例句与用法：

Absent or diminished fertility.

不育没有生育力或生育能力减低

The fertility of the soil has been greatly improved by the use of pesticides.

土壤施用杀虫剂後肥力大增。

It's rich there because of the fertility of soil.

因为土地肥沃，那儿很富裕。

It will be a fertility of year for much raining.

因为雨水多，今年会是丰产的一年。