He is interested in the study of international auxiliary languages.

I want to learn Min Dong Chinese.

The Austronesian languages are one of the most widely distributed language families in the world.

The Baltic languages are part of the Indo-European language family and are mainly spoken in countries around the Baltic Sea.

The Slavic languages are one of the major language groups in Europe.

The Celtic languages are ancient languages of Europe, and are still spoken in some parts today.

The Italic languages refer to a series of languages including Latin.

The Austroasiatic languages, including Vietnamese and Khmer, are a language family that includes many languages.

Slavic languages are one of the major language groups in Europe.

Studying Old Norse helps to deeply understand the history of the Vikings.