telofilum

例句：

1. 1. The old iron door is covered in a layer of rust.
   那扇旧铁门上覆盖着一层锈。
2. 2. The steel beams are rusting away under the sun.
   钢梁在阳光下生锈。
3. 3. The rusted nails were difficult to remove from the wall.
   生锈的钉子很难从墙上取下来。