Ryunosuke is my best friend.

A large piece of driftwood was washed up on the beach.

A large amount of electric current is flowing through this power line.

He drifted all night at sea.

Have you ever seen a wyvern flying in the sky?

Charged particles are affected by electric and magnetic fields.

This building was erected last year.

Plans are underway to erect a new building.

He attacked the enemy using a shrapnel.

Sulfurous acid is often used for food preservation.