He has a deep interest in archaeology.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He is spending a lot of time on experimental research.

Amorphous substances have characteristics different from crystals.

One part is important.

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

The Austroasiatic language family includes many Southeast Asian languages, such as Vietnamese and Thai.

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