1N-COUNT [oft n NOUN]研磨机,碾磨机(厨用电器) In a kitchen, a grinder is a device for crushing food such as coffee or meat into small pieces or into a powder. 研磨机,碾磨机(厨用电器)
...an electric coffee grinder.
电动咖啡研磨机
2N-COUNT 磨床;砂轮 A grinder is a machine or tool for sharpening, smoothing, or polishing the surface of something. 磨床;砂轮