swimmer
Con un buen entrenador, el nadador lleva las de ganar.
With a good coach, the swimmer has a lot to gain.
Dave es el nadador más rápido de todos mis compañeros de clase.
Dave is the fastest swimmer of all my classmates.
Ken es un buen nadador.
Ken is a good swimmer.
I want to be a swimmer.
Su padre era un buen nadador cuando era joven.
His father was a good swimmer when he was young.