He is majoring in political science at university.

He is an expert in bibliography and has many publications.

In geology, morphology is the field that studies the shape and structure of the terrain.

He is an expert in ecology.

He devoted his life to the study of science.

I am interested in the ancient Kyūjitai form of 雅楽.

He is majoring in medicine.

It's important to study a little bit every day.

It is important to study something new every day.

He is majoring in psychology at university.