Answer:
Algo, cierta cosa en particular.
Step-by-step explanation:
"a certain thing" means "algo en particular". You use it when you refer to something specific, implying that you are talking about ONE thing in particular and not in general.
translate: "cierta cosa" significa "algo en particular". Lo usa cuando se refiere a algo específico, lo que implica que está hablando de UNA cosa en particular y no en general.
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