work against the clock

基本解释

Sharpen your reflexes and work your technique flight for a race against the clock panting.
为了争取比赛的时间要加强你的反应能力并提高你的飞行技巧。
www.wda.com.cn
Right now , the number 1 task is to work against the clock to save lives. Every single minute and every single second counts.
“现在第一位的工作是抓紧时间”救人，多争取一分一秒的时间就可能多抢救出一个被困者。”
blog.sina.com.cn
They work against the clock to get the meat on the table while the animal it came from (usually fish, shrimp, squid, etc) is still alive and twitching.
在这些海鲜被捞起来后（通常是鱼、虾、鱿鱼、或是其它），他们就必须争分夺秒地在它们还活着，能挣扎的时候取得肉。