Yabla video uses of 一口气

Sōng
le
一口气 yīkǒuqì
I sighed with relief.
退 tuì
dào
bǎi
之外 zhīwài
一口气 yīkǒuqì
lián
shè
sān
jiàn
He walked back 100 paces and in one breath, fired three arrows in a row.