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 local economy.

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

This competition is very tough.

We are competing in business.

He buys fresh vegetables at the local market every Saturday.