Looking at the population pyramid, you can see that this country is aging.

You shouldn't tell him secrets because he has a loose tongue.

Kou is a very smart boy.

On nights when the moon shines brightly, I feel special.

The success of this project largely depends on the arbitrariness of each member.

Reading is an essential activity in college life.

Kouji participated in a baseball game on Sunday.

He is researching on the pathogenesis and treatment of early-onset diabetes.

This area is rich in bedded cupriferous iron sulphide deposits.

He is an expert in ethology.