He was repairing the road using a jackhammer.

This rock drill is very efficient and can quickly cut through rock.

There is a new air purifier in my room.

This superheterodyne receiver is very effective in receiving radio signals.

He is an expert in computer science.

My new electric vacuum cleaner is very quiet, making cleaning easier.

This is my new monoplane.

I like climbing Mount Rakukiyama.

The space probe discovered a new planet.

There is still an old ticket machine left at the station.