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单词 θ214325
释义
society > occupation and work > equipment > machine > parts of machines > lever > [noun] > point against which lever is placed (1)
fulcrum1659

Originally: a prop, a support (obsolete). In later use: spec. the point against which a lever is placed to get a purchase or on which it turns or…

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更新时间:2025/2/3 7:40:16