Wow, I must say I am completely impressed...I didn't deduce anything near that meaning from it.This is a horribly written sentence. I'd understand it to mean this:
It is advisable that an adult never be alone with a child.
(Supongo que el contexto es de los maestros con los estudiantes?)
¡Hola a todos! Un milenio después.... lo siento, recién lo veo.Thank you everyone, and COLsass I just fixed it.
Se recomienda evitar que eladultoesté asolascon unniño.