mainspring
US /ˈmeɪn.sprɪŋ/
UK /ˈmeɪn.sprɪŋ/
名詞
1.
主發條
the most important reason for something; the thing that makes something else happen:
範例:
•
Work was the mainspring of his life.
在 Lingoland 學習這個單詞
主發條
the most important reason for something; the thing that makes something else happen: