fuel oil purifying system

例句：

1. 1.The fuel oil purifying system is crucial for maintaining the cleanliness of the engine.
   燃油净化系统对于保持发动机的清洁至关重要。
2. 2.The fuel oil purifying system helps to remove harmful substances from the fuel.
   燃油净化系统有助于从燃料中去除有害物质。
3. 3.The fuel oil purifying system is designed to improve the efficiency of the engine.
   燃油净化系统旨在提高发动机的效率。