fenugrec

例句：

1. 1. The old car has a lot of fenugrec on its body.
   这辆旧车车身有很多铁锈。
2. 2. The metal parts need to be cleaned off before they can be used again.
   金属部件需要清理干净才能再次使用。
3. 3. The iron fence is covered in fenugrec, making it difficult to climb over.
   这面铁栅栏上满是铁锈，爬过去很困难。