Afghan officials say five US troops killed Monday in southern Afghanistan were fired down by mistake in a coalition airstrike. The Zabul province police says coalition forces were completing a security operation when militants ambushed them. ________________ 阿富汗官方称,周一,由于联合空袭发生失误,5名美军士兵在阿富汗南部被炸身亡.扎布尔省警方表示,当联合部队正在执行一项安全任务时遭到了武装份子袭击._____________________
