This shape is called a muoctahedron, in other words, a hexagonal four-piece square hole twisted polyhedron.

Mr. Kai takes a 30-minute walk every day.

Dan is a popular character.

I love Japan.

My main job is translation.

It is important to learn the basic grammar of Japanese.

This sample is very rare.

The headquarters of my company is in Tokyo.

Let's start the meeting according to Japan Standard Time.

This sentence was translated by machine translation.