I bought a new study aid for my math exam.

He is an expert in applied physics.

Spectroscopy is an important means of investigating the properties of matter.

Gestalt psychology is an important means to understand human cognitive processes.

My sister works as a physical therapist.

This baked skewered tofu in miso sauce has a very good flavor.

He is an expert in Classical Chinese text studies, and is good at interpreting ancient Chinese literature.

Proletarian literature is a type of literature that depicts the life and struggles of the working class.

He is majoring in the study of national law.

Infrared astronomy plays a very important role in the study of the universe.