A bomber suddenly appeared from the sky.

The railroad crossing gate is down, and I'm waiting for the train to pass.

He works as a pilot of a warplane.

A twin-engine airplane can continue to fly even if one engine fails.

The surveillance aircraft is monitoring the enemy's movements.

My father bought a new tiller.

My father bought a new tiller.

I separated the sample using a centrifuge.

The space probe discovered a new planet.

I bought a train ticket at the ticket machine.