piracy  
noun [ U ] uk/ˈpaɪ.rə.si/ us/ˈpaɪr.ə.si/
  (SHIPS)      
  海盗抢劫
the act of attacking ships in order to steal from them
  Piracy is alive and flourishing on the world's commercial sea lanes. 在世界商业航线上,海盗抢劫仍然十分猖獗。 
   (MOVIES/MUSIC)      
 非法复制,盗印
the act of illegally copying a computer program, music, a film, etc. and selling it
  software/video piracy 软件/录像盗版