He is interested in ancient mathematics.

I am majoring in parasitology at university.

Cartography is an important field of study for visually representing geographic information.

He is majoring in metallurgy at university.

He is an expert in oceanography.

He learned about the structure of society in his civics class.

He is an expert in enzymology and conducts many researches.

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

Topography is a field of study that researches terrain and geographical features.

My specialty is urology, and I am particularly interested in kidney research.