He used a radar to search for the ship.

This paper machine produces high-quality paper.

Operating a drone is difficult.

He bought a new winepress to make his own wine.

He is making homemade wine using a winepress.

He is an expert in computer science.

I like climbing Mount Rakukiyama.

The space probe discovered a new planet.

I used a futon dryer to dry the damp futon.

A stealth bomber has the characteristic of being difficult to detect by radar.