名詞 impulsion:

1. a force that moves something along
   同義詞：drift, impetus
2. the act of applying force suddenly
   同義詞：impulse, impetus

im.pul.sion

n.（名詞）
The act of impelling or the condition of being impelled:
沖擊：受驅(qū)使做出的行動(dòng)或被驅(qū)使的狀態(tài)：
例句：
.I do not move . . . unless it be under the impulsion of a third party.(Samuel Beckett)
.我不會(huì)動(dòng)搖…除非在第三個(gè)黨派的驅(qū)使下.(塞繆爾·貝克特)

An impelling force; a thrust.
驅(qū)動(dòng)力；推力
Motion produced by an impelling force; momentum.
沖力：驅(qū)動(dòng)力引發(fā)的移動(dòng)；動(dòng)力
A wish or an urge from within; an impulse.
沖動(dòng)：發(fā)自內(nèi)心的愿望或欲望；沖動(dòng)