废铁

例句：

1. 1. The old car was rusted andneeded to be repaired.
   那辆旧车生锈了，需要修理。
2. 2. The factoryhad a lot of scrap metal lying around.
   工厂里有很多废金属。
3. 3. Hefound some rusted ironin the back yard.
   他在后院发现了一些生锈的铁。