iron wool

例句：

1. 1. The iron wool was so heavy that it couldn't be moved easily.
   铁棉非常重，难以移动。
2. 2.The iron wool blanket kept us warm during the cold winter nights.
   铁棉毯在寒冷的冬夜为我们提供了温暖。
3. 3.The iron wool was used to make furniture and other items.
   铁棉被用来制作家具和其他物品。