- 问题详情:Pretoria,SouthAfrica–HundredsofswimmersplayinthewateralongaSouthAfricabeach.Suddenlyahugesharkappearsoffshoreandheadsforthebathers.Beforeitcangetclosetotheswimmers,theshark,forsomemysteriousreason,startsswimmingparalleltothebeach.Thenitturns...
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