He has a black belt in karate.

I drink black vinegar every day for my health.

It is said that terrifying creatures live in that dark forest.

His heart seemed as dark as pitch.

In the Edo period, women blackened their teeth as a symbol of beauty.

It was my first time catching a bighead carp.

The American red wolf is one of the endangered species.

The whooping crane is an endangered species, and it is difficult to see its beautiful figure.

My dream is to live in the United States of America someday.

The American continent is where diverse cultures and nature coexist.