lubrication failure

例句：

1. 1. The engine's lubrication system failed due to a faulty seal.
   由于密封故障，发动机的润滑系统失败了。
2. 2. The sudden lubrication failure caused the machine to stall.
   突然的润滑失效导致机器停止运转。
3. 3. The engineer suspected a lubrication failure as the car wouldn't start.
   工程师怀疑是润滑失效，因为汽车无法启动。