He is knowledgeable in all fields of learning.

He is widely recognized as an expert in dogmatics.

He is majoring in the study of national law.

He understands the basic concepts of thermodynamics.

He is active as the chief information officer of our company.

General relativity is a theory of physics proposed by Einstein.

Special relativity is one of the fundamental theories of physics.

Euclidean geometry forms the foundation of geometry.

I am majoring in auditory phonetics at university.

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