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  1. sand dollar

    • n.
      a flattened sea urchin which lives partly buried in sand, feeding on detritus.
    • noun: sand dollar, plural noun: sand dollars

    • 更多解釋
    • IPA[sand ˈdälər]
    • n.
      a flattened sea urchin which lives partly buried in sand, feeding on detritus.

    Oxford American Dictionary