a.

1. 多产的，多育的；富于创造力的
   a prolific writer

   多产作家

   prolific animals

   多育动物

2. 丰富的，富饶的；富于……的[（+of/in）]
   The last few pages of the document are prolific of mistakes.

   这个文件的最后几页错误很多。

   The mountainous area is prolific in valuable minerals.

   这一山区有丰富的宝贵矿石。

adj.

1. producing much fruit or foliage or many offspring.
2. (of an artist, author, etc.) producing many works.
3. plentiful.