Light particles play an important role in particle physics.

The ship is moored at the harbor.

The ship was moored at the harbor.

We enjoyed fishing in the mountain stream over the weekend.

His words were filled with deep feelings.

Deep emotion was reflected on her face.

He learned how to operate an anti-aircraft gun.

He is known as a person of unimpeachable conduct.

Japan is a constitutional state, and all people are equal under the law.

He thought deeply about the result of that juristic act.