ventilating system

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a mechanical system in a building that provides fresh air (Freq. 1)
- she was continually adjusting the ventilation
• Syn:
ventilation, ventilation system
• Derivationally related forms:
ventilate (for: ventilation)
• Hypernyms:
mechanical system
• Part Meronyms:
ventilation shaft, ventilator