He is fluent in three languages.

他能流利地说三门语言。

youdao

I can read and write in three languages.

我能用三种语言读和写。

youdao

I can read and write in three languages.

我可以用三种语言进行读写。

youdao

Singapore will hold public events in at least three languages: English,Malay and Mandarin.

VOA: special.2009.09.15

I have to admit, in my career here, I think I've taught in at least three languages, I suspect you've taught more, five or six, John?

我需要承认，在我的事业生涯里，我觉得我教过至少三种语言，我假设你们都学过更多，五六种，John？

麻省理工公开课 - 计算机科学及编程导论课程节选

It contains more than twenty-three-thousand books in eight languages.

VOA: special.2009.11.16

In its July 7 London manuscripts sale, the auction house is offering a 1, 500-year-old biblical document that includes layers of text and meaning--in three languages.

FORBES: On The Block

Most applications have been translated into Arabic and are presented in a customized and user-friendly interface, ensuring accessibility to the FOSS package in three languages (Arabic, English and French).

UNESCO: MEDIA SERVICES

The project consists of assembling and readapting a package of high quality free open source software in three languages (Arabic, French and English) and disseminating it in Arab countries on USB keys.

UNESCO: Listserv to create FOSS community in Maghreb