'素' is one of the basic characters in Japanese.

What is this box used for?

My grandfather underwent cataract surgery.

Looking out the window, there was a rain shower.

He is a famous painter.

He is learning the technique of beating gold.

I want to see the midnight sun at least once.

I bought a new broom to clean my room.

He is known as an erudite person.

He takes pride in his erudition in that field.