In the US, when a transcript contains a translation of conversations spoken in a foreign language, a qualified witness must authenticate and verify the translation. See United States v. Llinas, 603 F.2d 506, 509-10 (5th Cir. 1979).

A party who wishes to challenge the accuracy of a translation is responsible for presenting another translation. The jury may then choose which version to believe. United States v. Rosenthal, 793 F.2d 1214, 1238 (11th Cir. 1986) (citing Llinas, 603 F.2d at 509).

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