Definition [Cambridge Dictionary]:

1. (of animals and plants) the quality of being able to produce young or fruit.[可繁殖性、生育能力]

2. (of land) the quality of producing a large number of good quality crops.[肥沃、富饶]

3. (of the mind or imagination) the quality of producing a lot of unusual and interesting ideas. [（思想的）丰富、多产]

Example:

He runs a fertility clinic.

他开着一家生育诊所。

She was prescribed fertility drugs to stimulate her ovaries.

医生给她开了助孕药，以便刺激她的卵巢。

Yet, soil fertility will be the most important constraint for organic rice production.

然而，土壤肥力将是有机米生产的最重要制约因素。

He is famous for the fertility of his imagination.

他因为想象力丰富而著名。

a god of fertility

丰收之神