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English definition of “loosen (sth) up”

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loosen (sth) up

verb uk phrasal verb with loosen   /ˈluː.sən/ us  
to prepare your muscles for a physical activity by stretching and doing simple exercises: I do a few stretches to loosen up before I run.
Translations of “loosen (sth) up”
in Chinese (Traditional) (體育活動前)進行準備活動,熱身…
in Chinese (Simplified) (体育活动前)进行准备活动,热身…
(Definition of loosen (sth) up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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