1
an impulsion to do sth
表示做某事的强烈冲动。
He felt a sudden impulsion to leave the room.
他突然感到一股离开房间的冲动。
推动力；原动力
impulsions — plural of impulsion
先理解核心含义，再看它在真实句子里的用法。
推动力；原动力
a force that moves something along
He felt a sudden impulsion to leave the room.
他突然感到一股离开房间的冲动。
推动或驱动的行为,或被推动的状态；一个物体对另一个物体的突然或短暂作用力；推动力或冲动
The act of impelling or driving onward, or the state of being impelled; the sudden or momentary agency of a body in motion on another body; also, the impelling force, or impulse.
对心灵产生意外或暂时影响的力量；突然的动机或影响；冲动
Influence acting unexpectedly or temporarily on the mind; sudden motive or influence; impulse.
His sudden impulsion to quit his job surprised everyone.
他突然辞职的冲动让所有人感到惊讶。
The new policy gave an impulsion to economic growth.
新政策为经济增长提供了推动力。
The impulsion of the crowd sent him stumbling forward.
人群的冲击力让他踉跄向前。
表示做某事的强烈冲动。
He felt a sudden impulsion to leave the room.
他突然感到一股离开房间的冲动。
表示某物的推动力或冲击力。
The impulsion of the waves eroded the cliff.
海浪的冲击侵蚀了悬崖。
Not this
His impulsion behavior annoyed me.
Use this
His impulsive behavior annoyed me.
'impulsion'是名词，而这里需要形容词来修饰'behavior'，应改为'impulsive'。
Not this
He had an impulsion to shout.
Use this
He had an impulse to shout.
表示突然的欲望时，通常用'impulse'而非'impulsion'，后者多指推动力或原动力。
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页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.