im.pulse

impulse的音标和读音：
DJ音标发音： [ˈimˌpʌls]
KK音标发音： [ˈɪmˌpʌls]

impulse的词性：
n.（名词）

1. An impelling force; an impetus.
动力：驱使性的力量；动力

2. The motion produced by such a force.
推动：由这种力量造成的移动

3. A sudden wish or urge that prompts an unpremeditated act or feeling; abrupt inclination:
冲动：突然的心愿或欲望导致的未经考虑的行动和感受；突兀的倾向：

had an impulse to run away; an impulse of regret that made me hesitate; bought a hat on impulse.
有一种跑开的冲动；突发的后悔之情令我犹豫不决；心血来潮买了一顶帽子

4. A motivating force or tendency:
本能：驱动力或倾向：

“Respect for the liberty of others is not a natural impulse in most men”(Bertrand Russell)
“对大多数人来说，尊重他人的自由并不是一种自然的本能”(伯特兰·罗素)

5. Electronics A surge of electrical power in one direction.
【电子学】 脉冲：电力的单向涌动

6. Physics The product obtained by multiplying the average value of a force by the time during which it acts. The impulse equals the change in momentum produced by the force in this time interval.
【物理学】 冲量，推进力：力的平均值与它的作用时间相乘的结果。等于力在其作用时间段内产生的动量的变化

7. Physiology The electrochemical transmission of a signal along a nerve fiber that produces an excitatory or inhibitory response at a target tissue, such as a muscle or another nerve.
【生理学】 神经脉冲：信号沿着神经纤维的电化性的传播，在目标组织上产生兴奋的或抑制的反应，如在肌肉或另一神经上

impulse的词性：
adj.（形容词）

8. Characterized by impulsiveness or acting on impulse:
冲动的：以冲动或即兴行动为特征的：

an impulse shopper; impulse buying.
即兴的购物者；即兴购物

impulse的词源：

9. Latin impulsus [from past participle of] impellere [to impel] * see impel
拉丁语 impulsus [] 源自impellere的过去分词 [驱使，迫使] *参见 impel