noun🔗Share주요 스프링The principal spring of a clockwork mechanism, which drives it by uncoiling."The old clock stopped working because the mainspring was broken. "오래된 시계는 주요 스프링이 고장나서 작동을 멈췄다.machineparttechnicaldevicetimeChat with AIVocabulary GamePractice Reading
noun🔗Share원동력, 주요 원인The most important reason for something (Cf. spring "origin of something" (literary) (often in the plural) the springs of her ambition)."My daughter is the mainspring of my life."내 딸은 내 삶의 원동력이다.businessattitudemindphilosophyChat with AIVocabulary GamePractice Reading
