English to Italian Art/Literary Linguistics

Among other aspects definite reference implies that, first, the intended referential target is necessarily a particular entity who can be *uniquely* identified by the speaker; second, the speaker intends that the referential target should come to be *uniquely* identified for the hearer; third, the act of reference brings with it to the hearer an implicit assurance that he/she has enough information to *uniquely* identify the referent.

IN QUESTO CASO TRADUCO: 'senza ambiguità'? Potrebbe andare?
Grazie!!