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

1.
争分夺秒, 与时间赛跑
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.
我们争分夺秒地工作,以便在截止日期前完成项目。
•
The rescue team raced against the clock to find the missing hikers.
救援队争分夺秒地寻找失踪的徒步旅行者。