He exercises his latissimus dorsi muscle at the gym every day.

This vast area of land has been owned by our family for generations.

This project requires extensive research.

This project requires a broad range of skills.

He is receiving treatment for brain radiation.

Ryuhiro is my best friend.

Hiroki is my best friend.

Matsuhiro is my best friend.

Mr. Morihiro is my best friend.

Electromagnetic radiation conveys energy in forms such as light and radio waves.