旷日持久 [- rì chí jiǔ]delay [last] for a long time; drag on; extend over days; long-drawn-out; maintain for a long time; prolonged; protracted; waste the day and stand by:
•¶旷日持久的谈判 long-drawn-out negotiations
•¶ 这场旷日持久的战争使他们国家财政濒于破产的边缘。 This long-drawn-out war brought their country's finance to the verge of bankruptcy.