noun [物质名词] 油脂；润滑油
Grease is an oily substance that is produced by your skin. (皮肤分泌的) 油脂
verb [vt. 及物动词] 给…加润滑油，为…涂（或抹）油
If you grease a part of a car, machine, or device, you put grease on it in order to make it work smoothly. 给…加润滑油
- grease 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 15 Fifty pence worth of trouble grease 名词: 润滑油
