reproducer
  揚聲器
  reproducer
  複製器
  reproducer
  再製器
  Re·pro·du·cer n.
  1. One who, or that which, reproduces.
  2. In a phonograph, a device containing a sounding diaphragm and the needle or stylus that traverses the moving record, for reproducing the sound.
  3.  In a manograph, a device for reproducing the engine stroke on a reduced scale.
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  reproducer
       n : an audio system that can reproduce and amplify signals to
           produce sound