synthetic steam cylinder oil

例句：

1. 1.The engine needs a synthetic steam cylinder oil to run smoothly.
   这个引擎需要一种合成蒸汽缸油才能顺畅运行。
2. 2. The technician replaced the old oil with a synthetic steam cylinder oil.
   技师用一种合成蒸汽缸油替换了旧的油。
3. 3. The new model car uses a synthetic steam cylinder oil that improves fuel efficiency.
   新款汽车使用了一种提高燃油效率的合成蒸汽缸油。