The success of this project is a combination of many components.

This cobalt is very rare.

Cobalt is a hard metal that has magnetism.

The battery ran out, and the light stopped working.

Health is very important.

His opinion is very important.

We are working on the manufacturing of new products.

We are building a factory to manufacture new products.

We installed solar batteries on the roof of our house.

It is important to understand the importance of health.