gla·brous /ˈglebrəs/
  (a.)無毛的,光潔的
  gla·brous /ˈglebrəs/ 形容詞
  平滑的,無毛的
  Gla·brous a.  Smooth; having a surface without hairs or any unevenness.
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  glabrous
       adj : having no hair or similar growth; smooth; "glabrous stems";
             "glabrous leaves"; "a glabrous scalp"