This compound is called cyclopentadecane.

The valley is part of the beautiful scenery of this area.

I record my lessons every day.

This fabric has high color fastness, so it is hard for the color to fade even when washed.

His room was like a chaos.

Special relativity is one of the fundamental theories of physics.

Ichishiro-san is my best friend.

He was working as if he had eight faces and six arms, doing the work of many.

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

The 'Ju' in sushi means longevity.