free·boo·ter /ˈfriˌbutɚ/
  海盜
  Free·boot·er n.  One who plunders or pillages without the authority of national warfare; a member of a predatory band; a pillager; a buccaneer; a sea robber.
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  freebooter
       n : someone who takes spoils or plunder (as in war) [syn: plunderer,
            pillager, looter, spoiler, despoiler, raider]