We are planning a campaign for the sales promotion of the new product.

Countries located in the Eastern Hemisphere have diverse cultures and histories.

This rock is gabbro.

He was arrested for a minor offense.

This wall is made of a special material that causes diffuse reflection.

This material has the property of diffusely reflecting light.

He is not a perfect hero, but rather like an antihero.

This shape is an antiprism.

This shape is called a great icosihemidodecahedron.

The Yi were an ancient tribe in eastern China.