The Mariana Trench is the deepest part of the earth.

Hiroshi is my best friend.

The house over there is very big.

He is world-famous as a comparative linguist.

He was immersed in music.

This lake is very deep.

Shin sleeps well in bed.

You need a sleeping bag when you sleep in the mountains.

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

This wire is bent into a hook shape.