He is deeply studying about the classification of superphylum in his biological research.

A baby's fontanelle naturally closes a few months after birth.

A baby's fontanelle closes a few months after birth.

This book explains in detail how to use the 'Kyūjitai form of 声門' in old Japanese.

His incisors are very sharp.

There is a large sluice gate in this river.

I was deeply impressed by the teachings of Fuke-shū.

His father is a very strict person.

During the Yuan dynasty, Chinese culture developed greatly.

This is my original.