He is my poor friend, always causing trouble.

This room is entirely empty.

This room is entirely empty.

I think his actions are an evil against society.

This product is of poor quality and not worth the price.

This product is of poor quality and not worth the price.

His language was vulgar and unpleasant, unbearable to listen to.

The door opens.

The four tones of Chinese, namely ping, shang, qu, and ru, I particularly find the rising tone (jōshō) difficult.

Luge is one of the events in the Winter Olympics.