castiron

例句：

1. 1. The cast iron door is rusted and needs to be replaced.
   这个铸铁门生锈了，需要更换。
2. 2. He used a hammer to break the cast iron pipe.
   他用锤子砸断了铸铁管。
3. 3. The cast iron pot is very heavy and can only be used for cooking on an open fire.
   这个铸铁锅很重，只能在露天火上使用。