He has a self-centered personality and doesn't listen to others' opinions at all.

Whenever I go shopping at the supermarket, I always bring a reusable shopping bag.

America is one of the superpowers in the world.

He claimed to be a 'superior citizen' to justify his actions.

He is living like a riverbank beggar.

In physics, blackbody radiation is a very important concept.

The system of provinces was a part of the ancient political system in Japan.

He was recognized as a living national treasure of Japan.

Please tell me the details of the project's progress.

Beautiful colored carp (koi fish) are swimming in my garden.