The ejecta from the volcano plays an important role in shaping the terrain.

He refused to clean up the vomit.

This mineral is very rare.

My favorite bowl dish is Oyakodon.

His art style is unique, it's neither fish nor fowl.

He said he couldn't agree with the views of the revisionists.

He is good at solving technical problems.

He always has an optimistic attitude.

His music is very avant-garde, and some people might not understand it.

He is facing economic problems.