rang·er /ˈrenʤɚ/
 守林人,騎警,徘徊者


 Ran·ger n.
 1. One who ranges; a rover; sometimes, one who ranges for plunder; a roving robber.
 2. That which separates or arranges; specifically, a sieve. [Obs.] “The tamis ranger.”
 3. A dog that beats the ground in search of game.
 4. One of a body of mounted troops, formerly armed with short muskets, who range over the country, and often fight on foot.
 5. The keeper of a public park or forest; formerly, a sworn officer of a forest, appointed by the king's letters patent, whose business was to walk through the forest, recover beasts that had strayed beyond its limits, watch the deer, present trespasses to the next court held for the forest, etc. [Eng.]
 Note: Rangers in U.S. national parks and national monuments perform a similar function.

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 Ranger
      n 1: a member of the Texas state highway patrol; formerly a
           mounted lawman who maintained order on the frontier
           [syn: Texas Ranger]
      2: an official who is responsible for managing and protecting
         an area of forest [syn: fire warden, {forest fire
         fighter]
      3: a member of a military unit trained as shock troops for
         hit-and-run raids [syn: commando]