im·pul·sion /ɪmˈpʌlʃən/
 衝動,沖擊,原動力,推動


 im·pul·sion /ɪmˈpəlʃən/ 名詞
 衝動,癖


 impulsion
 脈沖


 Im·pul·sion n.
 1. The act of impelling or driving onward, or the state of being impelled; the sudden or momentary agency of a body in motion on another body; also, the impelling force, or impulse. “The impulsion of the air.”
 2. Influence acting unexpectedly or temporarily on the mind; sudden motive or influence; impulse. “The impulsion of conscience.” --Clarendon. “Divine impulsion prompting.”

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 impulsion
      n 1: a force that moves something along [syn: drift, impetus]
      2: the act of applying force suddenly; "the impulse knocked him
         over" [syn: impulse, impetus]