China‘sstarhurdlerLiuXianghaspulledoutthe2012LondonDiamondLeaguemeetingaftersufferingfromabadback.中国跨栏之星刘翔因背部伤势退出2012伦敦钻石联赛。Liuhadcruisedintothe110meterhurdlesfinalatCrystalPala......