Growth hormone plays an important role in promoting the growth of the human body.

He was arrested on suspicion of being an industrial spy.

The leisure industry occupies an important part of the economy.

The Industrial Revolution greatly changed the world's economy.

As soon as he arrived, he said 'I just got here.'

He is majoring in economics.

He is a renowned economist who has written many important papers.

He is facing economic problems.

The government has announced a new budget plan.

He changed his diet to improve his life.