却说鲜卑大酋檀石槐,自恃强盛,未肯服汉,且连年寇掠幽并诸州;朝廷以田晏夏育两人,曾随段颎破灭诸羌,勋略俱优,特任田晏为护羌校尉,夏育为乌桓校尉,分守边疆。既而晏坐事论刑,意欲立功自赎,特使人入托王甫求...