宋(song)军想拿回兜岭已经不(bu)是(shi)一天(tian)两天了,但这(zhe)等雄(xiong)关要想拿下绝非易(yi)事(shi),由于(yu)地(di)势(shi)险(xian)要,一是己方纵有优(you)势(shi)兵(bing)力,在关前也难以(yi)展开,二是攻城车等(deng)大型攻(gong)城(cheng)器具(ju)难以(yi)及近,光(guang)靠云梯等物(wu)攀爬,按正常情形非付出(chu)惨重伤亡不可(ke)。
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