prelubricated ball

例句：

1. 1.The prelubricated ball isdesigned to reduce friction and improve performance.
   这个预润滑球的设计是为了减少摩擦并提高性能。
2. 2. The engineer used a prelubricated ball to ensure smooth operation ofthe machine.
   工程师使用了一个预润滑球来确保机器的平稳运行。
3. 3. The prelubricated ball was crucial in preventingwear and tear on the moving parts.
   预润滑球在防止移动部件磨损方面至关重要。