He is studying the major ethnic groups in that region.

I want to travel to Central Asia.

The Turkic language family is a group of languages spread across Central Asia and Siberia.

Siberia is a vast region of Russia.

He is good at speaking English.

The Siberian tiger is an incredibly powerful animal, and its strength and speed are astonishing.

This virus is spreading rapidly.

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

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

The Austronesian language family is one of the most widely distributed language families in the world.