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单词 annulus
释义 Noun: annulus (annuli,annuluses)  anyulus
  1. A toroidal shape
    - ring, halo, doughnut, anchor ring 
  2. (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar
    - skirt

Derived forms: annuli, annuluses

Type of: plant part, plant structure, toroid

Part of: partial veil

Encyclopedia: Annulus

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