He was recognized as a living national treasure of Japan.

Aito won a prize in an essay contest.

Nuclear fission is a powerful process that generates energy.

He is an expert in nuclear physics.

Alkaline earth metals are one of the main components of the earth's crust.

In order to solve this problem, first, we need to divide the whole into several parts.

The pupil of her eyes was a deep blue, like the sea.

She was spinning thread on a spinning wheel.

The roof of this house is made of thatch.

My younger brother caught the influenza.