#aqualung__Aqua-Lung__scuba  a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is acronym for Self Contained Underwater Breathing Apparatus
  supertype:  #breathing_device__breathingdevice__breathingapparatu__breathing_machine__breathingmachine__ventilator  a device that facilitates breathing in cases of respiratory failure
  part:  #cylinder  a cylindrical container for oxygen or compressed air
  part:  #oxygen_mask  a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank

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