He is a student at the University of Tokyo.

Phonetics is a part of linguistics that studies the physical, physiological, and psychological aspects of sounds.

Geopolitics is the key to understanding important aspects of international relations.

He is good at performing opera.

My company specializes in the manufacture of fine chemicals.

He is an expert in toxicology.

He is an expert in orthoepy, teaching pronunciation.

He is an expert in planetary science.

He is a world-renowned scholar.

He is a renowned jurist who has written many important legal books.