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  1. smoothness

    • IPA[ˈsmo͞oT͟Hnəs]

    美式

    • n.
      the quality or state of being smooth
    • noun: smoothness

    • 更多解釋
    • IPA[ˈsmuːðnəs]

    英式

    • n.
      the quality or state of being smooth: the smoothness of her skin the evacuation went off with remarkable smoothness

    Oxford Dictionary

  2. 知識+