Japan is facing a brain drain of excellent scientists and engineers.

He used his brains to the fullest to solve the problem.

He is a famous author and a person who is respected by many people.

He is an excellent engineer.

He is an excellent student.

He proved his excellence in that project.

He is facing a difficulty.

We have to face this problem.

He is a world-famous scientist.

The harmful discharge from the factory is having a significant impact on the environment.