switch lubricant

例句：

1. 1. The engineer switched the lubricant to prevent wear on the gears.
   工程师更换了润滑油，以减少齿轮的磨损。
2. 2. The new lubricant is designed to improve the performance of the machine.
   新润滑剂的设计目的是提高机器的性能。
3. 3. Switching between different types of lubricants can help extend the lifespan of your equipment.
   在不同类型润滑剂之间切换可以帮助延长设备的使用寿命。