ventilation
名词 ventilation:
the act of supplying fresh air and getting rid of foul air
同义词:airing
a mechanical system in a building that provides fresh air
同义词:ventilation system, ventilating system
free and open discussion of (or debate on) some question of public interest
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
同义词:breathing, external respiration, respiration