形容词是fruitful，表示富有成效的，多产的，例如：
1.Our farm boasts hundreds of fruitful peach trees.我们农场有数百棵硕果累累的桃树。
2.We had a long， happy， fruitful relationship.我们有过一段长久、愉快、双方都获益良多的关系。
3.The talks had been fruitful， but much remained to be done.会谈卓有成效，但还有很多事情要解决。
