Ar·ab /ˈærəb, ˈɛr; ||ˈeˌræb/
  阿拉伯人,阿拉伯馬(a.)阿拉伯人的,阿拉伯的
  Ar·ab n.  One of a swarthy race occupying Arabia, and numerous in Syria, Northern Africa, etc.
  Street Arab, a homeless vagabond in the streets of a city, particularly and outcast boy or girl.  --Tylor.
     The ragged outcasts and street Arabs who are shivering in damp doorways.   --Lond. Sat. Rev.
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  Arab
       n 1: a member of a Semitic people originally from the Arabian
            peninsula and surrounding territories who speaks Arabic
            and who inhabits much of the Middle East and northern
            Africa [syn: Arabian]
       2: a spirited graceful and intelligent riding horse native to
          Arabia [syn: Arabian]
  Arab
     ambush, a city in the mountains of Judah (Josh. 15:52), now
     Er-Rabiyeh.
  Arab, multiplying; sowing sedition; a window; a locust