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English definition of “bone up”

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bone up

 /ˈboʊnˈʌp/ infml
verb [T] phrasal verb with bone  /boʊn/ us  
to study a subject as much as you can in a short period of time: She boned up on her Spanish before going to Mexico.
Translations of “bone up”
in Chinese (Traditional) 苦學,專心致志地學…
in Chinese (Simplified) 苦学,专心致志地学…
(Definition of bone up from the Cambridge Academic Content Dictionary © Cambridge University Press)
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