I am studying Japanese.

We are going on a trip together.

I lost my precious belongings.

He is a specialist in that field.

He has expert knowledge.

He is studying computer science at a specialized school.

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

There are many different specialty stores in this town.

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

We are working on building a new communications network.