He understands the importance of learning.

This song expresses a joyful feeling.

He is majoring in applied mathematics at university.

I am majoring in linguistics at university.

I love biology.

Phonetics is a part of linguistics that studies the physical, physiological, and psychological aspects of sounds.

He is a world-renowned scholar.

He is majoring in mineralogy at university.

I am majoring in machine learning.

He is known as an expert in pedagogy.