His passion for the game flared up again.

His flaring up again means that he is immersing himself in that hobby again.

When winter comes, the cost of light and heat increases.

Thermal pollution can potentially have serious effects on marine life.

This computer is equipped with a high-performance heat release system.

This machine releases a large amount of heat while operating.

Lassa fever is a serious infectious disease that is particularly prevalent in West Africa.

His passion was the key to his success.

He missed school because he had a fever.

My friend contracted Q fever.