I conducted a research project as a summer vacation homework.

We are focusing on the research and development of new products.

He is a world-renowned researcher.

My brother is a graduate student at the University of Tokyo.

He is a perfectionist, and his approach to work is very strict.

His performance was perfect and without blemish.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

This fish is completely farmed, and no capture is done in the natural environment.

This programming language is said to be Turing complete.

He likes to take a walk in the park at dusk.