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  1. roughen

    • IPA[ˈrəfən]

    美式

    • v.
      make or become rough
    • verb: roughen, 3rd person present: roughens, gerund or present participle: roughening, past tense: roughened, past participle: roughened

    • 釋義

    動詞

    • 1. make or become rough the wind was roughening the surface of the river his voice roughened
    • 更多解釋
    • IPA[ˈrʌfn]

    英式

    • v.
      make or become rough: the wind was roughening the surface of the river his voice roughened

    Oxford Dictionary