ven·ti·la·tor /ˈvɛntḷˌetɚ/
  通風機,送風機,換氣扇
  ven·ti·la·tor /ˈvɛntḷˌetɚ/ 名詞
  通風機,風扇,空(氣)調(節)器
  Ven·ti·la·tor n.  A contrivance for effecting ventilation; especially, a contrivance or machine for drawing off or expelling foul or stagnant air from any place or apartment, or for introducing that which is fresh and pure.
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  ventilator
       n 1: a device (such as a fan) that introduces fresh air or expels
            foul air
       2: a device that facilitates breathing in cases of respiratory
          failure [syn: breathing device, breathing apparatus, breathing
          machine]