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.

My father bought a new snowblower.

He is interested in the design of spacecraft.

He loves flying in the sky with a glider.

This compressor is very efficient.