铁锭

例句：

1. 1. Theiron bar was too heavy for me tolift.
   那根铁棒太重了，我举不起来。
2. 2. The iron lump was usedto make the door.
   那个铁块被用来做门。
3. 3. The iron bar was usedas a support for the roof.
   那根铁棒被用作屋顶的支撑。