The music echoed in the valley.

He entered the building through the revolving door.

When he opened the window, fresh air flowed into the room.

When he opened the window, fresh air flowed into the room.

The door opens.

I heard the sound of the church bell.

The sound of the church bell was echoing far away.

I can hear the sound of a bell.

He opened the Western-style door.

The sound was so quiet that I could hardly hear it.