My major is oceanography.

He is majoring in Japanology.

I can't go to college because the tuition is too high.

How much is the calculation for this product?

He earned a doctorate in the field of applied science.

This dress is currently on sale for half price.

He is an expert in serology, working on research into infectious diseases.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

Thermochemistry is a part of chemistry that deals with the reactions of heat and matter.

Thermochemistry is a branch of chemistry that studies the interaction of heat and matter.