gumming of piston rings

例句：

1. 1. The engine was gumming from a worn-out belt.
   发动机因为磨损的皮带而漏油。
2. 2.The car's oil filter was gumming, indicating a need for maintenance.
   汽车的油滤器正在漏油，表明需要维护。
3. 3. The old engine had been gumming for years, and it was time to replace it.
   这台旧引擎已经漏油多年了，是时候更换它了。