一气的英文：
in a breath

参考例句：

Like an animal at bay, the bandit chieftain laid about in desperation.
土匪头子困兽犹斗，在绝望中向四面八方乱打一气。

Blow in all one's salary in a grand frolic
把所有的薪水乱花一气

"Ah," replied he, sighing, "that is not very surprising
“唉！”他叹了一气答道，“那算不上十分稀奇。

Let's settle the matter at one stroke, not piecemeal
把这事一气儿解决了吧，别零敲碎打了。

No sooner had the speaker finished than a person in the audience fired off half a dozen questions at him
演讲者刚刚说完，一个听众就一气儿向他提了半打问题。

His hands plunged and rummaged in his trunk while he called for - a clean handkerchief
他把双手伸到箱子里去乱翻一气，并且嚷着要一块干净手绢。

breath是什么意思：
n. 呼吸，气息；一口气；迹象；微量；微风；瞬间

There was not a breath in the air.
一丝风也没有。

The doctor asked me to breathe in, then to breathe out fully.
医生让我先吸气，然后全部呼出。

The doctor told me to breathe in and then breathe out slowly.
医生叫我吸气然后慢慢地呼出。

He made a deep breath.
他深深地吸了一口气。

There is a breath of autumn in the air today.
今天的天气已露出了一丝秋天的气息。