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	spheterize Sphex sphexes sphin sphincter sphincter ani sphincterate sphincteric sphincters sphinctrate sphindid Sphindidae sphinges sphingid Sphingidae sphingidaes sphingids sphingine sphingo- sphingolipid sphingolipidoses sphingolipidosis sphingolipids sphingometer sphingosine

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