ventilation

US /ˌven.t̬əlˈeɪ.ʃən/
UK /ˌven.t̬əlˈeɪ.ʃən/
1.

換気

the provision of fresh air to a room, building, etc.

:
ventilation of the mines had long been mechanized
2.

換気

public discussion or examination of an opinion, issue, or complaint.