He knows a lot of Japanese idioms.

I want to learn about the history of Samhan.

A large audience gathered at yesterday's concert.

There is beautiful marbled bamboo planted in my garden.

His name is written on the university's tatekan.

It has become a habit for me to watch the crown program every night.

He is undergoing training for extravehicular activity.

He engaged in an extravehicular activity from the spaceship.

We crossed the sea by catamaran.

The shipworm is known for eating wood.