cycle oil

例句：

1. 1.The car needs a new cycle oil tokeep it running smoothly.
   这辆车需要换新的机油来保持顺畅运行。
2. 2. He changedthe oil in his bike before starting theengine.
   他在启动引擎前更换了自行车的机油。
3. 3. The mechanic checked the oil leveland replaced it with fresh cycle oil.
   机械师检查了油位并使用新鲜的循环油进行了替换。