油

例句：

1. 1. The car needs some oil torun smoothly.
   这辆车需要一些油才能顺畅运行。
2. 2. Oil is a common ingredient incooking and baking.
   油是烹饪和烘焙中常见的成分。
3. 3. The engine requires regular oilchanges to maintain its performance.
   发动机需要定期更换机油以保持其性能。