impulse
柯林斯词典
1. N-VAR An impulse is a sudden desire to do something. 冲动
Unable to resist the impulse, he glanced at the sea again. 他抑制不住冲动,又看了一眼大海。
2. N-COUNT An impulse is a short electrical signal that is sent along a wire or nerve or through the air, usually as one of a series. 脉冲
It works by sending a series of electrical impulses which are picked up by hi-tech sensors. 它通过传输由高技术传感器收集的电脉冲而起作用。
3. ADJ An impulse buy or impulse purchase is something that you decide to buy when you see it, although you had not planned to buy it. 一时心血来潮的[ADJ n]
The curtains were an impulse buy. 这窗帘是一时心血来潮买下的。
4. PHRASE If you do something on impulse, you suddenly decide to do it, without planning it. 凭一时冲动
Sean's a fast thinker, and he acts on impulse. 肖恩是个思维敏捷、凭一时冲动行事的人。
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impulse /ˈɪmpʌls/ (impulses)
剑桥词典
impulse noun (WISH)
[ 可数名词:有复数形式的名词 动词后面接一个带to的不定式 ]a sudden strong wish to do something
冲动,突然的强烈欲望
I had this sudden impulse to shout out "Nonsense!" 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。”
impulse noun (SIGNAL)
[ 可数名词:有复数形式的名词 ]a short electrical , radio , or light signal that carries information or instructions between the parts of a system
脉冲
an electrical /nerve impulse 电脉冲/神经冲动
impulse noun (REASON)
[ 可数名词:有复数形式的名词 通常作为单数使用的名词 ] formalsomething that is the driving force behind or reason for something else
动机;动力;刺激
a creative /commercial impulse 创作冲动/商业动机 返回 impulse