He is conducting research on mining.

I prefer the latter over the former.

They are engaged in a fight with the local gang.

That high-rise building has become a landmark of this city.

My younger brother will enter the engineering department next year.

The binturong is a nocturnal animal that mainly lives in trees.

Rigor mortis is the phenomenon where part or all of the body stiffens after death.

A unary operator operates on one operand.

He spends a lot of time on public works.

Due to the skin effect, the current mainly flows on the surface of this wire.