polyglot

我的表哥是个语言天才，能流利地说七种语言。

My cousin is a ___polyglot who can speak seven languages fluently.

作为一位通晓多种语言的人，他能流利地用五种语言交流。

Being a ___polyglot, he can communicate fluently in five languages.

这本多语言词典包含英语、法语和西班牙语的解释。

This ___polyglot dictionary includes explanations in English, French, and Spanish.