We need to find new ways to reduce energy use.

I think this prototype will be useful in developing new products.

He measures time accurately using an atomic clock.

He is a famous wealthy person in Kagoshima, and is respected by many people.

A visitor has come.

The prefectural police are investigating the incident.

This sentence is using the inclusive form.

He is an expert in criminal law.

The alarm went off, and everyone hurriedly evacuated.

He learned how to operate an anti-aircraft gun.