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"A no ser que" is a phrase which is often translated as "unless", and "salvo que" is a conjunction which is also often translated as "unless". Learn more about the difference between "a no ser que" and "salvo que" below.
salvo que(
sahl
-
boh
keh
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).