around the clock

连续二十四小时地, 昼夜不停地
=round the clock

例句与用法：

The processing factory operated around the clock until the order was filled.

那加工厂昼夜不停地赶工，直到把定的货物赶出来为止。

详细释义：

日以继夜地

People with very important jobs sometimes have to work around the clock.

有要职在身的人有时要日以继夜地工作。