sthenia

例句：

1. 1. The old iron gate is covered ina thick layer of rust.
   那把旧铁门上覆盖着厚厚的一层锈。
2. 2.The rusted metal can be difficult torepair.
   生锈的金属很难修复。
3. 3. The rusty nails were still holding the door together.
   生锈的钉子仍然把门固定在一起。