zarfalin

例句：

1. 1.The iron nail has started to rust on the wall.
   这个铁钉开始在墙上生锈了。
2. 2.The car's engine is rusting because it hasn't been maintained properly.
   这辆车的发动机生锈了，因为没有得到适当的维护。
3. 3. The old house has a lot of rust on its windows and doors.
   这所旧房子有很多窗户和门上的锈迹。