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Dictograph

資料來源 : pyDict

偵聽器

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Dictograph \Dic"to*graph\, n. [L. dictum a thing said + E.
   -graph.]
   A telephonic instrument for office or other similar use,
   having a sound-magnifying device enabling the ordinary
   mouthpiece to be dispensed with. Much use has been made of it
   for overhearing, or for recording, conversations for the
   purpose of obtaining evidence for use in litigation.

   Note: The makers of this instrument spell it dictograph.
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