ventilation

US /ˌvɛntlˈeʃən/

UK /ˌventɪ'leɪʃn/

B2 中高級
n. (u.)不可數名詞換氣;通風
Proper ventilation helps in breathing

影片字幕

How do ventilators work? - Alex Gendler

05:42How do ventilators work? - Alex Gendler

3分鐘內最鼓舞人心的3個人物 (3 Most Inspiring People in 3 Minutes)

04:163分鐘內最鼓舞人心的3個人物 (3 Most Inspiring People in 3 Minutes)