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  1. arcus senilis

    • IPA[ˌɑːkəs sɪˈnʌɪlɪs]

    英式

    • n.
      a narrow opaque band encircling the cornea, common in old age.
    • noun: arcus senilis, plural noun: arci seniles

    • 更多解釋
    • IPA[ˌärkəs səˈnīlis]

    美式

    • n.
      a narrow opaque band encircling the cornea, common in old age.

    Oxford American Dictionary