oil stain

例句：

1. 1. The old carpet had a lot of oil stains on it.
   旧地毯上有很多油渍。
2. 2. The car was covered in oil stains from the accident.
   那辆车因为事故被油渍覆盖。
3. 3.The stain on the shirt is caused by oil spilled on it during the construction.
   衬衫上的污渍是由于施工时油溅上去的。