He used the radius to find the area of the circle.

His birthday party was like a wonderful feast, a Manchu Han Imperial Feast.

He is known as an oil baron.

I received a personal reproof from the department manager.

He found a rough gemstone and was very happy.

In this mine, work is being done to separate the gangue from the ore.

He is a famous jeweler.

Real analysis is a branch of mathematics that studies the properties of real numbers and the functions on them.

This wristwatch uses quartz.

She planted a pomegranate tree in the garden.