The prime meridian is the line that serves as a reference for determining the longitude of any point on Earth.

According to the Imperial Headquarters announcement, the war situation is progressing favorably.

We need to solve the problem in the production environment.

The Great Eastern Japan Earthquake is one of the most damaging earthquakes in Japanese history.

He participated in the anti-war movement.

The volcano erupted.

He is doing a special exercise to strengthen his flexor carpi ulnaris.

The flexor carpi radialis is an important muscle for bending the wrist.

He is doing special exercises to strengthen his extensor carpi ulnaris.

He is doing a special exercise to strengthen his extensor carpi radialis brevis.