Dreye權威釋義|impetus

n.

推動，促進；推動力；刺激[U][S1][（+to）][+to-v]
The president's plan gave fresh impetus to industry.
總統的計畫進一步推動了工業的發展。
衝力[U]
The car ran down the hill under its own impetus.
汽車藉著本身的衝力滑下山。

同義:

n.動力；衝力

同義參見:

以上來源於：《英漢大辭典》

n.

the force or energy with which a body moves.

▸a driving force.

C17: from L., ‘assault, force’.

以上來源於：《簡明牛津英語詞典》

以上來源於：《英漢醫學詞典》