快馬加鞭，漢語成語，意思是跑得非常快的馬再加上一鞭子，使馬跑得更快（whip the flying horse to an even swifter speed）。比喻快上加快，加速前進。可以翻譯為accelerate the speed，go faster。

例句：

要趕超世界先進水平，大家還要快馬加鞭。

In order to catch up with and surpass the advanced world levels, well have to accelerate our speed.

這項工作需要快馬加鞭地進行。

This work must be carried out at TOP speed.