fi·bril /ˈfaɪbrəl, ˈfɪ-/
  小纖維,鬚根
  fi·bril /ˈfaɪbrəl, ˈfɪb-/ 名詞
  纖絲,原纖維,小纖維
  Fi·bril n.  A small fiber; the branch of a fiber; a very slender thread; a fibrilla.
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  fibril
       n : a very slender natural or synthetic fiber [syn: filament,
           strand]