I studied linear algebra at university.

I am majoring in auditory phonetics at university.

Acoustic phonetics is the study of the physical properties of speech.

Articulatory phonetics is a study about the production of speech sounds.

Infrared astronomy provides a new perspective on understanding the universe.

He is an expert in comparative linguistics.

Humanities is an academic field that studies human culture and society.

He is an expert in ethology, and his research is highly regarded worldwide.

Digital terrestrial television broadcasting has good picture quality and high sound quality.

Whenever he faced a difficult situation, he always said, 'The best of the Thirty-Six Stratagems is to run away.'