About
HSK levels

    1. to grind; to rub; to polish; to sharpen
    2. to wear down; to die out
    3. to waste time; to pester; to insist

    她用石头磨谷子。 Tā yòng shítou mó gǔzi.

    1. to grind; grindstone
    2. to turn round

    她用磨石磨咖啡豆。 Tā yòng móshí mó kāfēi dòu.