lubricating oil inlet

例句：

1. 1. The engine needs to be lubricated regularly to ensure smooth operation.
   发动机需要定期润滑，以保证顺畅运行。
2. 2.The new car has a lubricating oil inlet that makes it easy to change the oil.
   新车有一个润滑油入口，使得更换机油变得很容易。
3. 3.The technician carefully checked the lubricating oil inlet before starting the engine.
   技术人员在启动发动机前仔细检查了润滑油入口。