单词	idler pulley
释义	idler pulley noun : a guide or tightening pulley for a belt or chain Word History First Known Use circa 1890, in the meaning defined above
随便看	sitellas siter siters sites sitfasts sith sithcund sithe sithence sithens sithes siting sitings sitio pinacoids pinacol pinacolate pinacolic pinacolin pinacoline pinacolone pinacone pinacotheca pinacothecas pinacula

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