It is said that the principles of the free market promote competition and increase efficiency.

He may say he's a doctor, but he's actually a veterinarian.

We are conducting various activities to raise the confidence of our students.

The efficiency of this machine is very high.

It's difficult to understand the principle of this machine.

This project aims to promote the advancement of science and technology.

This project aims to promote the local economy.

We are competing in business.

This competition is very tough.

We should value our freedom.