He is in the third year of junior high school, or in other words, he is in the 9th grade in school years.

Epidemiology is the science that studies the occurrence and spread of diseases.

I am majoring in political science at university.

I am majoring in physiology at university.

He likes going to chamber music concerts.

He has a deep interest in numismatics.

He is learning the basics of elementary learning.

He clenched his lower jaw tightly to endure the pain.

He is an expert in medicine.

Gagaku is the ancient court ritual music of Japan.