He is my biggest enemy.

His advice was very practical.

His target-like way of thinking is hard to understand.

He always proactively suggests new ideas.

This allele greatly affects the inheritance of color vision.

The Ministry of Education is responsible for Japan's educational policy.

My father is an expert in otolaryngology.

The grey matter of the brain is the central part of information processing.

He has psychopathy, making it difficult for him to understand social rules.

Amorphous substances have characteristics different from crystals.