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单词 emery
释义 emery
 /em"euh ree, em"ree/,  n.  
 a granular mineral substance consisting typically of corundum mixed with magnetite or hematite, used powdered, crushed, or consolidated for grinding and polishing.
 [1475-85; < MF emeri, OF esmeril < VL *smericulum, equiv. to MGk smêri (for Gk smýris rubbing powder; akin to SMEAR) + L -culum -CULE2]
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