impulse

['impʌls]

n.冲动, 心血来潮, 神经冲动, [物]冲量,[电]脉冲
vt.推动

例句与用法：

We were seized by a sudden impulse to run.

我们身不由己突然想跑。

An emotion, desire, physiological need, or similar impulse that acts as an incitement to action.

动机一种能作为诱导物而激发行为的情绪、愿望、心理需要或者类似的心理推动力

On impulse, I picked up the phone and rang my sister in Australia.

我一时心血来潮，拿起话筒就给在澳大利亚的妹妹打了个电话。

He bought the house on an impulse.

他凭一时冲动买下了这所房子。

词形变化：

形容词: impuissant |

详细释义：

n.

1. 冲动, 一时的念头[C][U]

My uncle bought the house on an impulse.

我叔叔一时冲动买下了那房子。

I used to act out of blind impulse when I was young.

我年轻时常凭盲目的冲动行事。

2. 推动力; 刺激[C]

The signing of the agreements will give an impulse to trade between the two countries.

这些协议的签订会促进两国间的贸易。

3. 【生理】神经冲动; 【电】脉冲[C]