His son underwent surgery for blastoma.

As a result of many years of smoking, he developed emphysema.

This mountain is made of tuff.

This rock is gabbro.

I like drinking red wine.

He is majoring in petrology at university.

The students lined up in response to the teacher's instructions.

He cleaned the bowl of the pipe thoroughly.

Buying him expensive wine is just like 'pearls before swine'.

I used binoculars to observe birds in the mountains.