A prolonged drought had necessitated the introduction of water rationing.

一场持续的干旱使定量供水的引进成为必需。

《柯林斯英汉双解大词典》

Prolonged drought has depleted the water.

长时间干旱，水源都枯竭了。

youdao

Florida is suffering from a prolonged drought.

而佛罗里达正在经历一场持续的干旱。

youdao

"The deteriorating security situation and prolonged drought in Somalia are forcing more people to flee further a-field into the neighboring countries and beyond."

VOA: standard.2009.09.26

On the other hand, she says some areas will have too little water and prolonged drought will affect the kind of crops people normally grow.

VOA: standard.2010.01.02

Instability and the devastating effects of prolonged drought are causing tens of thousands of Somalis to take to their feet in search of a safe refuge.

VOA: standard.2009.09.26

This shrinkage coincides with a period of prolonged drought in eastern Africa, and was probably caused by it.

ECONOMIST: Human evolution: Before the exodus | The

The rainy season next month will disrupt transport and so push up food prices, which a prolonged drought has already helped to inflate.

ECONOMIST: And now the political fall-out

Forest fires have been increasing in remote regions of North America during the past decade due to prolonged drought periods and climate variability.

CNN: Canadian forest fires add to U.S. pollution