If people ransack a building, they damage things in it or make it very messy, often because they are looking for something in a quick and careless way. 洗劫
verb [vt. 及物动词]vt. 洗劫,掠夺;遍寻
Not lost, for I will ransack the land till I find thee again. 不要迷路,因为我要彻底搜查这片土地,直到找到你为止。