I mailed a letter at the post office.

My father works at a post office branch.

Where is the cathode of this battery?

He played a beautiful serenade for me.

During the polar night period, it's a very strange experience that the sun doesn't rise.

The Far East is a geographical term referring to a part of Asia.

She always behaves in a tomboyish manner.

She always behaves in a tomboyish manner.

Her behavior is always graceful, and she is respected by everyone.

I saw a beautiful swan in the park.