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冲 动 , chōngdòng 
   be impulsive 
不 要 冲 动 , 理 智 些 吧 。  Don’t be so impulsive – have some sense. 
我 当 时 有 种 购 物 的 冲 动 。  I had an impulse to go shopping. 

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"Collins Chinese Dictionary 1st edition © HarperCollins Publishers 2004"