He made a model of a regular icosahedron.

I love biology.

This ring is made of lazurite.

A glottal sound is a sound that is produced when the glottis is closed.

The Osmanthus flowers are blooming, and the whole town is enveloped in a sweet fragrance.

My toxicology textbook is very difficult to understand.

I am majoring in phonetics at university.

I am majoring in biophysics at university.

My specialty is psychiatry.

News came in that an asteroid is approaching Earth.