They travelled through the mountains by way of an ancient walled city.他们取道一座有城墙的古城走过山区。The city was walled and built upon a rock.这座城市建在岩石上，四周筑有城墙。The walled city was attacked by barbarian hordes.那座筑有城墙的城市遭到大批野蛮人的进攻。Why not visit the beautiful walled city of York?为什么不参观一下围有城墙的美丽城市约克呢？