He took an oath to himself to succeed.

He started a new project, having stood ready and had his bow drawn.

This hermit crab can perform autotomy when it senses danger, allowing it to escape from enemies.

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.

My house is near the mountains.

This is my grandparents' house.