Sometimes, by buying something cheap now, you will be costing yourself more in the long run.
有时候你花了很少钱买了便宜货,但它日后可能要花掉更多的钱。
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。