universal-joint lubricant

例句：

1. 1. This universal joint lubricant is essential for maintaining the smooth operation of our machinery.
   这种万能关节润滑油对于保持我们机械的顺畅运行至关重要。
2. 2.The mechanics used this universal joint lubricant to ensure that all parts of the car worked together smoothly.
   这位机械师使用了这种万能关节润滑油，以确保汽车的所有部件都能顺畅地相互配合。
3. 3.In order to prevent any unnecessary wear and tear, it's important to use a good quality universal joint lubricant.
   为了预防不必要的磨损，使用高质量的万能关节润滑油是很重要的。