troop·er /ˈtrupɚ/
 騎兵,騎兵警察,傘兵


 Troop·er, n.
 1. A soldier in a body of cavalry; a cavalryman; also, the horse of a cavalryman.
 3. A mounted policeman. [Australia]
 Note: The black troopers of Queensland are a regiment of aboriginal police, employed chiefly for dispersing wild aborigines who encroach on sheep runs.
 like a trooper, with energy, endurance, or enthusiasm; as, to work like a trooper.

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 Group·er n.  Zool. (a) One of several species of valuable food fishes of the genus Epinephelus, of the family Serranidæ, as the red grouper, or brown snapper  (Epinephelus morio), and the black grouper, or warsaw (Epinephelus nigritus), both from Florida and the Gulf of Mexico. (b) The tripletail (Lobotes). (c) In California, the name is often applied to the rockfishes. [Written also groper, gruper, and trooper.]

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 trooper
      n 1: a soldier in a motorized army unit [syn: cavalryman]
      2: a mounted policeman
      3: a state police officer [syn: state trooper]
      4: a soldier mounted on horseback; "a cavalryman always takes
         good care of his mount" [syn: cavalryman]