yī kǒu qì
one breath
in one breath
at a stretch
sōng yī kǒu qì
to heave a sigh of relief
dào chōu yī kǒu qì
to gasp (in surprise, dismay, fright etc)
dào chōu le yī kǒu qì
to gasp (in surprise, dismay, fright etc)
yī kǒu qì r
erhua variant of 一口氣|一口气[yi1 kou3 qi4]
shū yī kǒu qì
to heave a sigh of relief