impulse ['ɪm.pʌls] noun WISH 欲望 [C + to infinitive] ■a sudden strong wish to do something 冲动,突然的强烈欲望•I had this sudden impulse to shout out "Rubbish!" in the middle of her speech.在她发言时我突然想大喊“一派胡言!” on (an) impulse ■because you suddenly want to, although you haven't planned to 一时兴起,心血来潮:•"I didn't know you were looking for some new shoes." "Oh, I wasn't - I just bought them on impulse."“我不知道你想要买双新鞋。”“噢,不是的——我只是一时冲动才买的。” ['ɪm.pʌls] noun SIGNAL 讯号 countable ■a short electrical, radio or light signal which carries information or instructions between the parts of a system 冲动;脉冲•an electrical/nerve impulse电脉冲/神经冲动 ['ɪm.pʌls] noun REASON 原因 countable usually singular formal ■something that is the force behind or reason for something else 动机;动力;刺激•a creative/commercial impulse创作/商业动机 |