closed book
closed book
kloʊzd bʊk
klowzd book
British pronunciation
/klˈəʊzd bˈʊk/

Définition et signification de « closed book » en anglais

Closed book
01

livre fermé, mystère

someone or something one knows very little or nothing about
closed book definition and meaning
IdiomIdiom
InformalInformal
example
Exemples
The workings of the stock market are a closed book to me – I do n't understand how it works.
Le fonctionnement de la bourse est un livre fermé pour moi – je ne comprends pas comment ça marche.
The new technology is a closed book to most people – they're not familiar with it yet.
La nouvelle technologie est un livre fermé pour la plupart des gens – ils ne la connaissent pas encore.
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