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.

This paper machine produces high-quality paper.

Operating a drone is difficult.

He used a radar to search for the ship.

He is interested in geometrical shapes.

He is conducting research on historical kana usage.

He often thinks about problems from a humanitarian perspective.