Something that gives a process impetus or an impetus makes it happen or progress more quickly.
例句
This decision will give renewed impetus to the economic regeneration of east London...这一决定会给东伦敦的经济复苏带来新的推动力。She was restless and needed a new impetus for her talent.她躁动不安,需要为自己的才华找到新的突破口。
英汉词典释义
n.
推动, 促进, 刺激
The treaty gave a fresh impetus to trade.这条约使双方的贸易又推进了一步。
推动力
This is the primary impetus behind the economic recovery.这是促使经济复苏的主要动力。