Please use the stairs because the elevator is broken.

He made a book using the new printing press.

This clock is running using a mainspring.

This transmitter can send signals far away.

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

The enemy aircraft invaded our airspace.

I made a calendar using the new calender.

The view from the airplane window is very beautiful.

I bought a new drying machine.

He is good at piloting a monoplane.