单词	annular auger
释义	annular auger noun : a ring-shaped boring tool that cuts a circular channel leaving the center intact Word History First Known Use 1863, in the meaning defined above
随便看	stethoscopy stets Stetson stetsons Stetsons stetted stettin Stettiner Haff stetting Stettinius Steuben stev steve stevedore stevedore knot stevedored stevedores stevedoring steven Stevengraph stevengraphs Stevens stevens Stevens Point stevensgraph

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