He has a deep interest in archaeology.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

I am majoring in physical chemistry at university.

I am majoring in biophysics at university.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

He is interested in phrenology.

He is interested in ancient mathematics.

I am majoring in parasitology at university.