im·pulse /ˈɪmˌpʌls, ɪmˈ/
 衝動,驅使,刺激,推動,衝力,脈衝(vt.)推動


 im·pulse /ˈɪmˌpəls/ 名詞
 衝動,博動,脈衝,神經衝動,搏動


 impulse
 脈衝


 Im·pulse n.
 1. The act of impelling, or driving onward with sudden force; impulsion; especially, force so communicated as to produced motion suddenly, or immediately.
    All spontaneous animal motion is performed by mechanical impulse.   --S. Clarke.
 2. The effect of an impelling force; motion produced by a sudden or momentary force.
 3. Mech. The action of a force during a very small interval of time; the effect of such action; as, the impulse of a sudden blow upon a hard elastic body.
 4. A mental force which simply and directly urges to action; hasty inclination; sudden motive; momentary or transient influence of appetite or passion; propension; incitement; as, a man of good impulses; passion often gives a violent impulse to the will; to buy something on impulse.
    These were my natural impulses for the undertaking.   --Dryden.
 Syn: -- Force; incentive; influence; motive; feeling; incitement; instigation.


 Im·pulse v. t.  To impel; to incite. [Obs.]

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 impulse
      n 1: an instinctive motive; "profound religious impulses" [syn: urge]
      2: a sudden desire; "he bought it on an impulse" [syn: caprice,
          whim]
      3: the electrical discharge that travels along a nerve fiber;
         "they demonstrated the transmission of impulses from the
         cortex to the hypothalamus" [syn: nerve impulse]
      4: (electronics) a sharp transient wave in the normal
         electrical state (or a series of such transients); "the
         pulsations seemed to be coming from a star" [syn: pulsation,
          pulsing, pulse]
      5: the act of applying force suddenly; "the impulse knocked him
         over" [syn: impulsion, impetus]
      6: an impelling force or strength; "the car's momentum carried
         it off the road" [syn: momentum]