He is majoring in geology.

He is an expert in pathology.

I am majoring in information science.

I study Japanese every day.

He is an expert in virology.

He has a deep interest in teratology.

I am majoring in embryology at university.

He is an expert in embryology, studying the developmental processes of many kinds of organisms.

The president makes the final decisions regarding the operation of the university.

I set aside time for study every day.