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        絕地爭鋒

        絕地爭鋒

        黃河壺口一帶,古為晉國與少數民族狄人的分界線,又是-兩國的分疆處,雖然晉陜峽谷的黃河兩岸山高壁陡,往來交通不便,但有古渡可通,加上此地河槽穩固、窄狹易渡,冬季結冰堅實可載車騎,所以歷朝當局多在此置關設隘,駐兵把守,作為進攻對方的橋頭堡,或作為防御的灘頭陣地,成為兵家必爭之地。

          
          
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            91欧美激情一区二区三区成人