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  1. Oxford American Dictionary

    per-

    • pref.
      through; all over；completely; very
    • 釋義

    字首

    • 1. through; all over perforation pervade
    • ▪ completely; very perfect perturb
    • ▪ to destruction; to ill effect perdition pervert
    • 2. having the maximum proportion of some element in combination peroxide permanganate