He is an expert in osteology.

He is working hard on his studies every day.

We should always remember the power of Kannon in difficult times.

He is doing special exercises to strengthen his flexor digitorum profundus.

He went to America as an international student.

My older brother is attending a college in Tokyo.

He proposed a new theory about quantum mechanics.

He is a professor of algebra.

I am majoring in economics at university.

I am majoring in climatology at university.