In psychology, it is important to understand the mechanism behind human behavior.

This engine is old, but it still works.

I separated the sample using a centrifuge.

The space probe discovered a new planet.

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.