the driving force (驾驶力)

Idiom Leadership

含义

the person or thing that motivates or leads progress

推动或引领进步的人或事物 (tuīdòng huò yǐnlǐng jìnbù de rén huò shìwù)

例句

"She was the driving force behind the project."

"她是项目背后的驱动力。" (tā shì xiàngmù bèihòu de **qūdòng lì**.)