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简介：　　TheHavanaBoxingAcademyisaCubanboardingschoolthattakes9-year-oldboys,andturnsthemintothebestboxersintheworld.SONSOFCUBAfollowsthestoriesofthreeyounghopefulsthrough8dramaticmonthsoftrainingandschoolingastheyprepareforthebiggesteventoftheirlivessofar:Cuba'sNationalBoxingChampionshipforUnder-12's.Butduringtheseason,cris...…