He is known as a person with learning.

We always take into account the needs of our regular customers.

He has expert knowledge.

He is studying computer science at a specialized school.

He is a specialist fool, with no interest in anything outside his field.

He couldn't say anything about issues outside of his field of expertise.

There are many different specialty stores in this town.

He was confused after reading the bizarre document.

He went to the archives to find important information.

My house is near the mountains.