The massacre incident shocked the world.

They massacred the innocent villagers.

Abuse should never be tolerated.

He was arrested on suspicion of abusing his child.

He twisted his opponent's arm in the judo match.

Mr. Nagueshi is my best friend.

This chemical reaction is a reversible process.

He couldn't stop his self-tormenting behavior.

This check valve has the role of preventing water from flowing backwards.

He was accused of the crime of regicide.