He publicly disclosed that he has a gender identity disorder.

He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

He was hospitalized due to mental derangement.

A dwarf planet is one of the smallest celestial bodies in the solar system.

My older brother is currently working hard on his research as a graduate student.

He took a tranquilizer to calm his nerves.

He is learning English phonetic symbols.

What is the market price of this product?

I love biology.

This ring is made of lazurite.