Translation of "to sift" into Spanish

Evidently they understood the Heb. verb to be derived from a similar-looking root that means “to sift; to pass through a sieve.”

Al parecer entendían que el verbo heb. se derivaba de una raíz de apariencia similar que significa: “cerner; cribar”.

Ducks, you're supposed to sift the flour, not sit in it.

¡ Patos! ¡ Debían cernir la harina, no sentarse en ella!

Epidemiologists have to sift through inconsistent versions and rumours to get the story right.

Los epidemiólogos tienen que hacer una criba entre versiones y rumores incoherentes para establecer la verdadera historia.