This motor is very efficient.

He used a loudspeaker to convey his message to a large crowd.

He sent a distress signal with the radio.

He handled the light machine gun carefully.

In this game, when you run out of lives, it's game over.

This old magic lantern is what my grandfather used when he was young.

He shot a movie using a new movie camera.

The outdoor air conditioner unit has broken down, so we need to have it repaired.

This phototypesetting machine is used for printing newspapers and magazines.

My father is plowing the rice field using agricultural machinery.