This old radio uses a pentode.

This new software maintains upward compatibility with the old version.

He is suffering from aphasia as a sequelae of stroke.

I saw a flamingo in the park.

The protection of this town is my responsibility.

Yasu is my best friend.

Naoya is my best friend.

Her success is due to her hard work.

He raised his hand and asked a question.

On this road, the principle is to keep left.