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单词 guinea pig
释义 guinea pig
  1. a short-eared, tailless rodent of the genus Cavia, usually white, black, and tawny, commonly regarded as the domesticated form of one of the South American wild species of cavy: often used in scientific experiments or kept as a pet.
  2.  Informal.   the subject of any sort of experiment.
 [1655-65]
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