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	dusk dark dusked dusker duskest duskier duskiest duskily duskiness duskinesses dusking duskish duskishly duskishness duskly duskness dusks dusky dusky dark dusky duck dusky grouse dusky salamander dusky shark dusky wing dusky-footed rat dusseldorfs

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