My school building is very big.

He has a strong sense of self-affirmation and always maintains a positive attitude.

He is suffering from acquired immune deficiency syndrome (AIDS).

This is a 六角四片四角孔ねじれ正多面體, in other words, a muoctahedron.

This is a model of a muoctahedron.

The police detained him to investigate the incident.

Kanna has two dogs.

He was lying face-up, looking at the stars.

My father always takes a rough attitude.

This mutetrahedron has a very unusual shape.