This building is made of high-quality steel.

We are choosing building materials to build a new house.

This oil solution is used to reduce friction in machinery.

This mixture is used to alleviate the symptoms of a cold.

It is said that this tree has been living for over a thousand years.

His grandfather is still going strong even at the age of 90.

He was convicted of a serious crime.

Using this coating agent to paint the wall provides a waterproof effect.

In this class, various nationalities coexist.

People of various nationalities are mixed in this party.