讲解文本：

against the clock 争分夺秒地，抢在某一时刻之前

We are working against the clock to finish the report.

为了完成这一报告我们争分夺秒。

We can't wait, It's a race against the clock.

我们不能再等了，现在是一场争分夺秒的竞争。

疯狂练习吧!