mainspring Meaning in the Cambridge English Dictionary
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Meaning of “mainspring” in the English Dictionary

"mainspring" in British English

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mainspringnoun [C usually singular]

uk   us   /ˈmeɪn.sprɪŋ/ formal
the most ​importantreason for something; the thing that makes something ​elsehappen: Work was the mainspring of his ​life.
(Definition of mainspring from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “mainspring”
in Chinese (Simplified) 主要原因, 主要动力…
in Chinese (Traditional) 主要原因, 主要動力…
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