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1. Oxford American Dictionary

   impulse

   • IPA[ˈimˌpəls]

   美式

   • n.
     a sudden strong and unreflective urge or desire to act；the tendency to act impulsively

   • noun: impulse, plural noun: impulses

2. • 釋義
   • 相關詞
   • 片語

   n.

   名詞

   • 1. a sudden strong and unreflective urge or desire to act I had an almost irresistible impulse to giggle 同義詞 urge, instinct, drive, compulsion, need, ... 更多itch, whim, caprice, desire, fancy, notion
   • ▪ the tendency to act impulsively he was a man of impulse, not premeditation 同義詞 spontaneity, impetuosity, wildness, recklessness, irresponsibility, ... 更多rashness反義詞 premeditation, carefulness
   • 2. a driving or motivating force; an impetus an added impulse to this process of renewal 同義詞 inspiration, stimulation, stimulus, incitement, motivation, ... 更多encouragement, fillip, spur, prod, catalyst
   • 3. a pulse of electrical energy; a brief current nerve impulses a spiral is used to convert radio waves into electrical impulses 同義詞 pulse, current, wave, signal, message, ... 更多brainwave, communication
   • 4. a force acting briefly on a body and producing a finite change of momentum ability to communicate motion by impulse
   • ▪ a change of momentum so produced, equivalent to the average value of the force multiplied by the time during which it acts.

   impulse buying

   • n.
     the buying of goods without planning to do so in advance, as a result of a sudden whim or impulse.

   Oxford American Dictionary

   nerve impulse

   • n.
     a signal transmitted along a nerve fiber. It consists of a wave of electrical depolarization ...

   Oxford American Dictionary

   impulse purchase

   • n.
     a thing that one buys without planning to do so in advance, as a result of a sudden whim or impulse: we all sometimes make impulse purchases and regret them a few hours later

   Oxford Dictionary

   impulse buying

   • n.
     the buying of goods without planning to do so in advance, as a result of a sudden whim or impulse.

   Oxford Dictionary

   nerve impulse

   • n.
     a signal transmitted along a nerve fibre. It consists of a wave of electrical depolarization ...

   Oxford Dictionary

   on impulse

   • ph.
     suddenly and without forethought; impulsively

   Oxford American Dictionary

   on impulse

   • ph.
     suddenly and without forethought; impulsively

   Oxford Dictionary

   on impulse (or on an impulse)

   • ph.
     suddenly and without forethought; impulsively

   Oxford American Dictionary

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   片語

   • on impulse
3. • 更多解釋

   impulse

   • IPA[ˈɪmpʌls]

   英式

   • n.
     a sudden strong and unreflective urge or desire to act: I had an almost irresistible impulse to giggle

   Oxford Dictionary