His travel story was very interesting.

Physics is a difficult subject.

This is my precious thing.

He created a new story.

That's a new thing, isn't it?

The Falco tinnunculus is known for its beautiful feather color and graceful flying style.

He is an expert in nuclear physics.

Coelenterates are said to be the first animals with a true body cavity.

Watching a movie alone is enjoyable.

I went to see a movie by myself.