trala

例句：

1. 1. The old iron gate is covered in rust.
   那把旧铁门上满是铁锈。
2. 2. The car was rusted by the rain.
   这辆车被雨水锈蚀了。
3. 3. The paint on the house has started to rust.
   房子上的油漆开始生锈了。