Mr. Chayuan is my best friend.

Their married life is harmonious.

Their wedding ceremony ended in perfect harmony.

There was a halo shining above his head.

He bought a new music disc.

This elliptical window is a characteristic part of the building.

Let's calculate the circumscribed circle of this triangle.

This problem cannot be solved unless both sides cooperate.

He is using binoculars to observe birds.

My friend has twin brothers.