关键词:波士顿马拉松爆炸案调查 2013 chaos erupted Boston near finish
InApril2013,chaoseruptedinBostonnearthefinishlineofoneoftheworld'soldestandmInApril2013,chaoseruptedinBostonnearthefinishlineofoneoftheworld'soldestandmostprestigiousmarathons.ItwastheworstterroristattackontheUnitedStatessince9/11andledtooneofthemostextensiveandpublicmanhuntsinAmericanhistory.Now,astheone-yearanniversaryapproaches,NationalGeographicChannelpresentsaspecialtwo-hourevent,Inside..
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