multimillionaire

千万富翁、大富豪、亿万富翁

He became a multimillionaire after selling his software company.

他卖掉自己的软体公司后成了千万富翁。

身价千万的、富豪的

The multimillionaire businessman donated the entire building to the school.

这位身价千万的商人把整栋大楼捐给学校。