He is majoring in meteorology at university.

I specialize in pharmacology research.

She is suffering from temporomandibular joint disorder.

Chromodynamics is a part of particle physics that describes strong interactions.

He is good at geometry.

The Yi were an ancient tribe in eastern China.

He said 'friend' as a noun ending for me.

The continental slope is a part of the seafloor topography, connecting the continental shelf and the deep sea floor.

I wonder where my medical thermometer is?

The tyrant flycatcher is known for its beautiful plumage and unique call.