Sulfoxide is a compound often used in organic chemistry.

My younger sister is working as a childcare worker.

He was promoted to Rear Admiral.

He is working hard to protect the honour of his family.

He took out a gun from the holster.

If you don't drive carefully, you'll end up rear-ending another car.

My father used a wedge to cut the wood.

I am assisting every day.

Horioka is my best friend.

His clothes are characterized by a black color.