impulse

B2 CET-4 大学 FREQ #8247 ★★☆☆☆

n. 冲动, 驱使, 刺激, 推动, 冲力, 建议, 脉冲 vt. 推动

发音

US /ˈɪmpʌls/

词形变化

impulses 复数 impulses impulsed impulses 三单 impulsing impulsing 现在分词 impulsed 过去式 impulsed 过去分词

教材释义与例句

名词

冲动； 脉冲；刺激；神经冲动；推动力

动词

推动

释义与例句

n. B2
  1. 1.

    A thrust; a push; a sudden force that impels.

    冲动

    意气

    冲量

    冲力

  2. 2.

    A wish or urge, particularly a sudden one prompting action.

    The impulse to learn drove me to study night and day.

    When I saw the new book, I couldn't resist the impulse to browse through it.

  3. 3.

    The integral of force over time.

    冲量

    冲力

    物理

    The total impulse from the impact will depend on the kinetic energy of the projectile.

v.
  1. 1.

    To impel; to incite.

    及物

词汇关系

名词

同义词 10

pulse urge momentum whim pulsing caprice impetus pulsation impulsion nerve impulse

上位词 10

need drive force strength desire wave motive thrust motivation driving force

下位词 7

wanderlust abience action potential death instinct deathwish itchy feet Thanatos

相关短语

on impulse 一时冲动；一时心血来潮；冲动的 on an impulse impulse buying n. 即兴购买, 未经考虑仅凭一时冲动的购物行为 impulse function [电] 脉冲函数 impulse buy [经] 推动购买, 即兴购买 impulse purchases impulse buys impulse purchase impulse functions impulse response [计] 脉冲响应 impulse responses impulse buyings impulse noise [计] 脉冲噪声 impulse good impulse goods

词源

Borrowed from Middle French impulser, from Latin impulsus.

来源：wiktionary