oily lubricant

例句：

1. 1.The new car has a smooth and oily lubricant that makes it run smoothly.
   新车有一个光滑且油腻的润滑剂，使得它运行顺畅。
2. 2. The old engine needed an oily lubricant to keep it running properly.
   旧引擎需要一种油性润滑剂来保持正常运行。
3. 3. The engineer used an oily lubricant to prevent the gears from grinding together.
   工程师使用了一种油性润滑剂来防止齿轮相互摩擦。