单词	counterbore
释义	counterbore 1 of 2 transitive verb coun·​ter·​bore ¦kau̇ntə(r)+ : to form a counterbore in : enlarge (part of a hole) by means of a counterbore counterbore 2 of 2 noun 1 : a flat-bottomed enlargement of the mouth of a cylindrical bore 2 : a drill for making a counterbore compare countersink Word History Etymology Transitive verb counter- + bore
随便看	lantaca lantaka lantana lantanas lanterloo lantern lantern clock lantern fish lantern flounder lantern fly lantern gurnard lantern jaw lantern light lantern pinion lantern ring lantern shell lantern slide lantern sprat lantern-jawed lanterned lanternfishes lanternflies lanternflyes lanternflys lanterning

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