oil cdour

例句：

1. 1. The car needs some oil to keep running smoothly.
   这辆车需要一些油才能顺畅运行。
2. 2. The engine requires regular oil changes to maintain its performance.
   发动机需要定期更换机油以保持其性能。
3. 3. The old car has a lot of oil in the engine, so it needs to be drained beforeselling.
   这辆旧车发动机里有大量油，所以在出售前需要排空。