He is majoring in geology at university.

I couldn't sleep because I heard the barking of a dog in the middle of the night.

A skunk is a nocturnal animal.

The thief was caught by the police.

This cake has a strong flavor of bitter almond.

Kunyan means a young Chinese girl.

He is the contact person for our team.

The calculation of arccosine is a part of trigonometry.

Calculating the arctangent, which is one of the trigonometric functions, is difficult.

He cherishes his family.