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[C/U] a sudden strong feeling that you must do something 冲动;一时的念头;突然的欲望 an impulse to do something : Jenny felt a sudden impulse to play some music. 珍妮突然觉得想放点音乐。
control/resist an impulse : She struggled to resist the impulse to laugh. 她努力抑制住想笑的冲动。
on (an) impulse (=because you suddenly feel that you want to) 凭一时冲动;一时冲动之下 : He saw them get into the car and on an impulse he followed them. 他看见他们钻进汽车,一时冲动之下他跟了上去。
act on impulse : Acting on impulse, he knocked on her door. 凭着一时冲动,他敲响了她的门。
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one of the strong basic feelings that make people do things 欲望;冲动 the sexual/creative impulse 性/创作冲动
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[only before noun] an impulse buy is something that you buy because you see it and want it 心血来潮的;一时冲动的 Synonyms and related words