rolly oil

例句：

1. 1. Rolly oil is a common lubricant used in industrial machinery.
   滚油是一种常见的工业机械用润滑剂。
2. 2.The old car needed some new lubricants to keep it running smoothly.
   这辆旧车需要一些新的润滑剂来让它顺畅运行。
3. 3.The engineer replaced the worn out bearings with new lubricants.
   工程师用新的润滑剂替换了磨损的轴承。