Chelifer

例句：

1. 1. The old iron gate is covered in a thick layer of rust.
   那把旧铁门上覆盖着厚厚的一层锈。
2. 2. The car's engine was rusted out after years of neglect.
   这辆车的引擎在多年未使用后生锈了。
3. 3. The metal surface is beginning to rust from the dampness inside the shed.
   金属表面开始因棚内潮湿而生锈。