lumbricales

例句：

1. 1. The engine needs a new oil and lubricant to run smoothly.
   发动机需要新的机油和润滑油才能顺畅运行。
2. 2. The car's engine is running smoothly with the correct amount of lubricant.
   汽车的发动机在正确的润滑油量下运行平稳。
3. 3.Lubricants are used to reduce friction in machinery.
   润滑油用于减少机械中的摩擦。