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  1. Oxford American Dictionary

    high-grade

    • IPA[ˈhīˌɡrād]

    美式

    • adj.
      of very good quality；(of ore) rich in metal value and commercially profitable.
    • 釋義

    形容詞

    • 1. of very good quality high-grade printing papers
    • ▪ (of ore) rich in metal value and commercially profitable.