It was quite a lucrative sideline
這份兼職很賺錢。
It's a lucrative business.
這是一筆賺錢的生意。
It was a great experience and lucrative as well.
它是一巨大經驗和賺錢的。
The target market is a lucrative one.
它的目標市場頗有利可圖。
Your own small business on the side sounds pretty lucrative.
你兼營的自己的小企業會很有利潤。