独一无二
English Expression:
  1. n.  in a class by itself
  2. n.  in a class by oneself
  3. adj.  Unique
  4. n.  unparalleled
  5. n.  be one and the only
  6. n.  unmatched
  7. n.  its kind
  8. n.  unequalled
French Expression:
  1. adj.  unique en son genre, hors pair, sans pareil (成语)