mainspring
Definition
The main spring that powers a clock or watch; metaphorically, a chief source of motivation or energy.
中文 为钟表提供动力的主弹簧;引申为主要的动力或能量来源。
Example
"Curiosity is the mainspring of scientific discovery."
The main spring that powers a clock or watch; metaphorically, a chief source of motivation or energy.
中文 为钟表提供动力的主弹簧;引申为主要的动力或能量来源。
"Curiosity is the mainspring of scientific discovery."