He is majoring in tidal science.

He is an expert in gemology, and he is good at evaluating the quality of diamonds.

Graphology is the study of determining a person's character or condition from their handwriting.

Graphology is a study that interprets a person's character and abilities from their handwriting.

Radio astronomy plays a very important role in understanding the universe.

My brother is a graduate student at the University of Tokyo.

He is a world-renowned researcher.

My laboratory is on the third floor of the university.

He is known as an excellent researcher.

I am a member of that research association.