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  1. stethoscope

    • IPA[ˈsteTHəˌskōp]

    美式

    • n.
      a medical instrument for listening to the action of someone's heart or breathing, typically having a small disk-shaped resonator that is placed against the chest, and two tubes connected to earpieces.
    • noun: stethoscope, plural noun: stethoscopes

  2. 知識+