He is learning the basics of elementary learning.

He clenched his lower jaw tightly to endure the pain.

Gagaku is the ancient court ritual music of Japan.

Ecology is a field of study that investigates the interrelationships of organisms in the natural world.

In this experiment, the substance will undergo a chemical change.

This substance undergoes a chemical change when heat is applied.

He is majoring in agronomy at university.

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.