单词	ringbolt
释义	ringbolt noun ring·​bolt ˈriŋ-ˌbōlt  : an eyebolt with a ring through its eye Illustration of ringbolt Example Sentences Recent Examples on the Web Your elder brother is clinging to a ringbolt near the bow. Anthony Lydgate, WIRED, 6 Sep. 2022 Word History First Known Use 1599, in the meaning defined above
随便看	spheration sphere sphere crystal sphere fungus sphere gap sphere of influence sphered sphereless spheres spheric spherical spherical aberration spherical angle spherical astronomy spherical coordinate spherical excess spherical geometry spherical lens spherical mirror spherical perspective spherical polygon spherical sailing spherical sector spherical triangle spherical trigonometry

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