mainspring
US /ˈmeɪn.sprɪŋ/
UK /ˈmeɪn.sprɪŋ/
명사
1.
주인
the most important reason for something; the thing that makes something else happen:
예시:
•
Work was the mainspring of his life.
Lingoland에서 이 단어 학습하기
주인
the most important reason for something; the thing that makes something else happen: