This wine has sulfurous acid added to it.

I learned about the reaction of nitrous acid in chemistry class.

He is studying the concept of the 'three talents' in ancient China.

What will you make for supper tonight?

My friend, Santiago, is from Chile.

My brother is a Sambo player.

I like to take a walk in the park.

I like to take a walk in the park.

Industrialization promotes economic growth.

I developed a chalazion in my right eye.