sweep·er /ˈswipɚ/
 打掃者,掃雷艦


 Sweep·er n. One who, or that which, sweeps, or cleans by sweeping; a sweep; as, a carpet sweeper.
    It is oxygen which is the great sweeper of the economy.   --Huxley.

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 sweeper
      n 1: an employee who sweeps (floors or streets etc.)
      2: a cleaning device with revolving brushes that pick up dirt
         as the device is pushed over a carpet [syn: {carpet
         sweeper]
      3: little-known nocturnal fish of warm shallow seas with an
         oblong compressed body