He was sustaining himself with local cuisine during his trip.

I'm scared of growing old.

He is working all day long.

An old person was walking in the park.

My grandfather is being seen by a specialist in geriatric medicine.

I think waste is an act of economic suicide.

Tetsuro is my best friend.

My father is the leader of a labor union.

In this factory, there are many workers who do physically demanding jobs.

Ryuichiro is my best friend.