She has a lucrative business selling leather goods.

她做意, 利润丰厚。

He decided to turn his hobby into a lucrative sideline.

他决定把自己爱好变成赚钱副业。

The practice is not a very lucrative one at the moment, but if it is worked up it should prove quite profitable.

这种业务眼下还不大能赚钱, 但如果努, 会证明是大可获利。