The People's Socialist Republic of Albania was once an existing country.

The Democratic Socialist Republic of Sri Lanka is located in South Asia.

The Socialist Federal Republic of Yugoslavia was a country that once existed.

He is majoring in electrical engineering.

He is majoring in civil engineering.

I am very interested in natural science.

Statistical mechanics is a branch of physics that provides a theoretical framework for understanding macroscopic phenomena from a microscopic perspective.

He is an expert in analytical mechanics and deeply understands its theory.

He is passionate about researching pure mathematics.

He has a deep interest in archaeology.