panopticon
  圓形監獄
  Pa·nop·ti·con n.
  1. A prison so contructed that the inspector can see each of the prisoners at all times, without being seen.
  2. A room for the exhibition of novelties.
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  panopticon
       n 1: an area where everything is visible
       2: a circular prison with cells distributed around a central
          surveillance station; proposed by Jeremy Bentham in 1791