a.

1. 生產的，生產性的
   productive assets

   生產性資產

2. 丰饒的；多產的；肥沃的
   During the most productive time in her career, she wrote five novels.

   在她創作生涯中最多產的時期，她寫了五本小說。

   Is rice the most productive food-bearing plant?

   稻子是不是產糧最多的植物？

3. 富有成效的，有收穫的
   a productive meeting

   富有成效的會議

4. 出產……的；產生……的[（+of）]
   The age was productive of men of genius.

   那個時代出天才。

5. 生痰的

adj.

1. producing or able to produce large amounts of goods, crops, etc.
   ▸relating to or engaged in the production of goods, crops, etc.
2. achieving or producing a significant amount or result.
3. (productive of) producing.
4. Linguistics  (of a prefix, suffix, etc.) currently used in forming new words or expressions.
5. Medicine  (of a cough) raising mucus from the respiratory tract.