沖動(dòng)，一時(shí)的念頭，突然地欲望
an impulse to do sth 指突然想做某事
Anna felt a sudden impulse to play some music.
Anna 突然覺(jué)得想放點(diǎn)音樂(lè)。
control/resist an impulse 就是指控制沖動(dòng)
He struggled to resist the impulse to laugh.
他努力抑制住想笑的沖動(dòng)。
on impulse 就是指憑一時(shí)沖動(dòng)
He saw them get into the car and on an impulse he followed them.
他看見(jiàn)他們鉆進(jìn)汽車，一時(shí)沖動(dòng)之下他跟了進(jìn)去。
the creative impulse 創(chuàng)作欲望
當(dāng)然也可以作形容詞，心血來(lái)潮的，一時(shí)沖動(dòng)的
an impulse buy 沖動(dòng)購(gòu)物
脈沖，神經(jīng)沖動(dòng)
