a volunteer
Doctor, el prefecto nuevo pidió un voluntario para cuidarme.
Doctor, the new prefect asked for a volunteer to take care of me.
— Los chicos del coro (2004)
El mago solicitó un voluntario entre la audiencia.
The magician asked for a volunteer from the audience.
I need a volunteer.
I was going to ask for a volunteer.
Precisamente por eso, preferiría tener un voluntario.
That's precisely why I'd prefer to have a volunteer.
— Stalker (1979)
Quiero un voluntario para ayudarme.
I need a volunteer to help me.
We need a volunteer.
Un voluntario es un hombre que realiza labores útiles para la sociedad sin paga.
A volunteer is a man who performs useful work for society without pay.
Necesito un voluntario del público.
I need a volunteer from the public.