Workers of the world, unite, the time has come to show our strength.

The International Workers' Association is historically an important organization.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

He thinks that war is a necessary evil.

This year's output increased by 20% compared to last year.

We are planning to establish a new production line.

This factory has introduced the latest machines for mass production.

In Marxism, it is said that the relations of production form the foundation of society.