produce的形容词形式是productive；
productive：adj.生产的；(尤指)多产的；有效益的
相关介绍
He was hopeful that the next round of talks would also be productive
他对下一轮会谈同样富有成效满怀希望。
Training makes workers highly productive
培训提高了工人们的生产力。
Instead of running round like a headless chicken use your efforts in a more productive way.
别像只没头苍蝇东一头西一头的，力气要用对地方。
