grind [graɪnd]

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n.（常贬义）用功的学生，书呆子；vt.磨，磨碎

to make something into small pieces or a powder by pressing between hard surfaces

Would you please grind a pound of coffee for me? 请给我磨一磅咖啡好吗？
Do you find learning English a grind? 你觉得学英语是一件苦差事吗？