pull up
US /pʊl ʌp/
UK /pʊl ʌp/

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améliorer, se ressaisir
to improve one's performance or behavior
:
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You need to pull up your grades if you want to get into college.
Tu dois améliorer tes notes si tu veux entrer à l'université.
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The team needs to pull up their socks and start winning.
L'équipe doit se ressaisir et commencer à gagner.