Some relative clauses in the contract have to be amended owing to the unexpected situation.
由于这种难以预料的情况,合同中的有关条款不得不做些修改。
So, faced with the Danish advance, Alfred did not risk open battle but harried the enemy.
因此,面对丹麦人的进攻,阿尔弗雷德没有贸然同敌人作战,而是采用骚扰敌人的战术。