名詞 impetus:

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

1. The historic strike gave an enormous impetus to the whole American labor movement.
   這次歷史性的罷工對整個(gè)美國的勞工運(yùn)動起了很大的推動作用。
2. Impetus of a physical object in motion.
   沖力運(yùn)動中物體的動力
3. The present conflict may provide fresh impetus for peace talk.
   目前的沖突可能會給和談提供新的推動力。

im.pe.tus

n.（名詞）
【復(fù)數(shù)】 im.pe.tus.es
An impelling force; an impulse.
推動力；沖力，刺激
The force or energy associated with a moving body.
運(yùn)動量：一個(gè)運(yùn)動的物體具有的能量或力量

Something that incites; a stimulus.
激勵物；刺激物
Increased activity in response to a stimulus:
動力：對刺激物反應(yīng)增加的活力：
例句：
The approaching deadline gave impetus to the investigation.
即將到來的最后期限推動了談判

來源：
Latin
拉丁語
from impetere [to attack]
源自 impetere [攻擊]
in- [against] * see in- 2
in- [反對] *參見 in-2
petere [to go towards, seek] * see pet-
petere [走向，尋覓] *參見 pet-