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.

He used a metal detector to search for treasure on the beach.

He is creating a newspaper using an electronic phototypesetter.

He bought a new winepress to make his own wine.

He is making homemade wine using a winepress.