After improving upon the telephone, Edison created the phonograph, his favorite and most lucrative invention.
在改进了电话功能后, 爱迪生又发明了留声机, 这是他喜爱的而且最能赚钱的一项发明.
There be a lucrative black market In spare parts for car.
Farmers abandoned the land for more lucrative exployment in the booming construction industry.
农民们抛弃了土地,到发达的建筑业中去找更能赚钱的职业.
He decided to turn his hobby into a lucrative sideline.
a stepping stone to a more lucrative career