1
the most important cause or reason why something happens
Synonyms and related words
Causes
cause
catalyst
source
Synonyms and related words
Reasons and excuses
reason
excuse
point
| 单词 | mainspring | ||||||||
| 释义 | mainspringnoun countable formal /ˈmeɪnˌsprɪŋ/ Word Forms
mainspringnoun countable formal /ˈmeɪnˌsprɪŋ/ Word Forms
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