huàn​qì

to take a breath

换气 換氣 huàn//qì
to take a breath
To take a breath after holding it, specifically in swimming, singing, or heavy exertion.
to ventilate
To change the air in a room or space by circulating fresh air; to aerate.
to exchange a gas tank
To swap an empty liquid petroleum gas tank for a full one.

Frequency

Movie subtitles
0.890 per million appears in 0% of films
Written text
1.61 per million

Sources