[yī kǒu qì]
(一口气息) one breath
draw a deep breath
深吸一口气
with a long sigh
长叹一口气
breathe [give; heave] a sigh of relief
宽慰地松了一口气
He slowly sat on the seat with a sigh.
他叹了一口气, 慢慢地坐到位子上。
rush to one's home at one go
一口气跑到家
He finished reading the novel at one sitting.
他一口气读完了那本小说。