#air_pump__airpump__vacuum_pump  a pump that moves air in or out of something
  supertype:  pump  a mechanical device that moves fluid or gas by pressure or suction
  subtype:  condensation_pump__diffusion_pump__diffusionpump  vacuum pump used to obtain a high vacuum
  subtype:  inflater__inflator  an air pump operated by hand to inflate something (as a tire)
  subtype:  ion_pump__ionpump  a vacuum pump that removes gas by ionizing the atoms or molecules and adsorbing them on a metal surface

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