Từ điển trực tuyến - Online Dictionary
mainspring
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English - Vietnamese Dictionary
mainspring /'meinspriɳ/
  • danh từ
    • dây cót chính (của đồng hồ)
    • (nghĩa bóng) động cơ chính (của một hành động)
Advanced English Dictionary
+ noun
1 [usually sing.] ~ (of sth) (written) the most important part of sth; the most important influence on sth: Small companies are the mainspring of the British economy. + Her Christian faith was the mainspring of her life.
2 the most important spring in a watch, clock, etc.


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