It was quite a lucrative sideline

　　這份兼職很賺錢(qián)。

　　It's a lucrative business.

　　這是一筆賺錢(qián)的生意。

　　It was a great experience and lucrative as well.

　　它是一巨大經(jīng)驗和賺錢(qián)的。

　　The target market is a lucrative one.

　　它的目標市場(chǎng)頗有利可圖。

　　Your own small business on the side sounds pretty lucrative.

　　你兼營(yíng)的自己的小企業(yè)會(huì )很有利潤。