fruitful

adj.

1. 成功的, 富有成效的
   • It was a fruitful meeting; we made a lot of important decisions.
     这是一次很有成效的会议, 我们做出了许多重大决定。
   • Newton's laws were fruitful for the future development of science.
     牛顿定律对其后的科学发展起了很大作用。
2. 多产的, 果实累累的
   • He is really a fruitful novelist.
     他真是一位多产的小说家。
   • These trees are fruitful.
     这些树果实累累。