1. I am oiling the hinges on the door so that it will open and close smoothly.
我正在给门上的铰链涂油，这样它会打开和关闭得更顺畅。

2. The mechanic is oiling the engine to keep it running smoothly.
这位技工正在给发动机加油，以保持其运转顺畅。

3. Remember to oil the bicycle chain regularly to prevent rusting.
记得定期给自行车链条涂油，以防止生锈。

4. The carpenter is oiling the wooden furniture to give it a shiny finish.
木匠正在给木制家具涂油，使其呈现出闪亮的光泽。

5. Before using the sewing machine, make sure to oil the moving parts for optimal performance.
在使用缝纫机之前，确保给活动部件涂油，以获得最佳性能。

6. The gardener is oiling the gardening tools to prevent them from rusting.
园丁正在给园艺工具涂油，以防止它们生锈。