against the clock
US /əˈɡɛnst ðə klɑk/
UK /əˈɡɛnst ðə klɑk/

1.
contra o relógio, com pressa
doing something in a great hurry, because there is very little time
:
•
We were working against the clock to finish the project before the deadline.
Estávamos trabalhando contra o relógio para terminar o projeto antes do prazo.
•
The rescue team raced against the clock to find the missing hikers.
A equipe de resgate correu contra o relógio para encontrar os caminhantes desaparecidos.