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词汇 pulley-block
释义 pulley-block 英'pʊliːbl'ɒk美'pʊliːbl'ɒk
基本英英近义反义
滑轮组,滑车组,手拉吊挂

Noun:
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope近义词 block街区pulley滑车pulley block滑轮组
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