guide bar oil cup

例句：

1. 1. The engineer used a guide bar to help him navigate through the complex machinery.
   工程师使用一个导向杆帮助他通过复杂的机械。
2. 2.The guide bar was essential for maintaining the balance of the car.
   导向杆对于保持汽车平衡至关重要。
3. 3. The oil cup was filled with fresh oil, ensuring optimal performance of the engine.
   油杯被装满了新鲜的油，确保发动机的最佳性能。