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

Thermal pollution can potentially have serious effects on marine life.

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

He is studying thermodynamics in depth.

His dream is to fly in the sky in a hot-air balloon.

My friend contracted Q fever.

His enthusiastic cry livened up the entire venue.

The thermosphere is a part of the Earth's atmosphere, located above the stratosphere and the mesosphere.

He lives on a tropical island.

He cannot enter into a legal contract as a person without legal capacity.