I bought a train ticket at the ticket machine.

He searched for metal using a new detector.

I have an emergency generator at my house.

This terminal unit supports the latest software.

He made a book using the new printing press.

Please use the stairs because the elevator is broken.

This clock is running using a mainspring.

This transmitter can send signals far away.

The enemy aircraft invaded our airspace.

In my school, we sometimes watch movies using a projector.