pull your socks up
US /pʊl jʊər sɑks ʌp/
UK /pʊl jʊər sɑks ʌp/

1.
더 노력하다, 정신 차리다, 분발하다
to make an effort to improve your work or behavior because it is not good enough
:
•
You need to pull your socks up if you want to pass the exam.
시험에 합격하려면 더 노력해야 해.
•
The team was told to pull their socks up after a series of poor performances.
팀은 연이은 부진한 경기 후 정신 차리라는 말을 들었다.