His drive for success keeps him moving forward.

Our team was fully mobilized to make the project a success.

His identification was undoubtedly accurate.

The police used fingerprints to identify the criminal.

In mathematics, equivalence classes are a very important concept.

It's very easy to walk on this flat road.

The initial response when an earthquake occurs is very important.

My brother is a master of Taido.

We belong to the same class.

This statue is made of copper.