一时冲动的英文：
acting on a sudden impulse

参考例句：

On the spur of the moment
一时冲动

At worst his scruples must have been quixotic,not malicious (Louis Auchincloss).
从最坏的角度来说，他的疑虑肯定是出于一时冲动，而不含恶意（路易斯·奥金克洛斯）。

I ask [ him ] whether the slam dunk of the indictment was a spontaneous or planned bit of theater(Ron Rosenbaum)
我问[他]剧院那次戏剧性的起诉是一时冲动还是有计划的行动罗恩·罗森鲍姆)

She gave the treacherous impulse time to subside(Henry James.
她一时冲动想退却(亨利·詹姆斯)。

Do not take it seriously; he did it out of impulse.
别把这当回事，这是他一时冲动所为。

An inclination to change one's mind impulsively.
无定性因一时冲动而改变主意的倾向

Henry had made his decision to fire me on impulse.
亨利作出解雇我的决定是凭一时冲动行事。

He felt certain that O'Brien was about to twist the dial out of sheer wantonness
他觉得奥勃良一时冲动之下很可能扳动杠杆。

He believed maggie was apt to follow the inclination of the moment without giving consideration to the outcome
他认为玛吉容易一时冲动，随心所欲而不顾后果。

Such impulsive acts as hugging strangers;impulsive generosity.
比如拥抱陌生人这种冲动的举止;一时冲动的慷慨大方

acting是什么意思：
n. 表演；演技；假装
adj. 代理的；装腔作势的
v. act的现在分词形式

This is an act of depressing.
这是使人压抑的行为。

The act of disappointing.
使人失望的行为

We must act, we must act quickly.
我们必须行动，立即行动。

sudden是什么意思：
adj. 突然的，意外的；快速的
n. 突然发生的事

A sudden loud blow or bump.
砰然作响发出砰一声的猛击或猛撞

A sudden, striking surprise;a twist.
意外发展突然的、惊人的变化；意想不到的转折

Hasty climbers have sudden falls
大起者有大落

impulse是什么意思：
n. 冲动；推动力；刺激；脉冲
adj. 冲动的
v. 推动

The curtains were an impulse buy.
这窗帘是一时心血来潮买下的。

Wade resisted an impulse to smile.
韦德强忍住想笑的冲动。

These impulses inhibit the production of melatonin.
这些电脉冲抑制了褪黑激素的分泌。