He was known as a persecutor in that area.

You, what are you doing?

That person is my friend.

It is important for each person to fulfill their role.

It's a tradition to make gingerbread for Christmas.

I learned about the reaction of amidine in chemistry class.

Hydrazine is a compound represented as NH₂-NH₂ in inorganic chemistry.

He is a master of kung fu.

I love amberjack sashimi.

He made a melded kong in mahjong.