He was the first discoverer of that new species of plant.

The Ministry of Education is responsible for Japan's educational policy.

My father is an expert in otolaryngology.

He is an expert in computer science.

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.

This word is etymologically derived from Latin.

Looking at this kanji graphically etymologically, its shape represents its meaning.