ad·dax /ˈæˌdæks/
  曲角羚羊
  Ad·dax n.  Zool. One of the largest African antelopes (Hippotragusnasomaculatus or Oryx nasomaculatus).
  Note: ☞ It is now believed to be the Strepsiceros (twisted horn) of the ancients. By some it is thought to be the pygarg of the Bible.
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  addax
       n : large antelope with lightly spiraled horns of desert regions
           of northern Africa [syn: Addax nasomaculatus]