The village new repair village-level highway 2.5 kilometers, initially easing the farmers on a journey, the difficult problems such as water difficult.

该村新修村级公路2.5公里，初步缓解了农民行路难、饮水难等问题。

youdao

Complicated lithology and abundant oil types of Carboniferous and Permian volcanic rocks cause the evaluation of oil and gas and water difficult in Santanghu basin.

三塘湖盆地石炭系、二叠系火山岩岩性复杂，油质类型丰富，造成油气水评价困难。

youdao

Extracting heat from very hot, dry rocks presents a more difficult problem: the rocks must be fractured to permit the circulation of water, and the water must be provided artificially.

从极热的而干燥的岩石中提取热量，暴露出了一个更加困难的问题：必须击碎岩石以保证水的循环，而水必须是人工提供的。

youdao

As for the market, when it approaches water it meets all sorts of obstacles: water is difficult to move, difficult to measure, difficult to price and often difficult to charge for, since many people think it should be free.

ECONOMIST: Water

TOHL, a start-up that produces flexible piping that can be deployed from helicopters to distribute water in difficult-to-reach areas or disaster zones, says it has spent the money on things such as testing its new system with a Chilean mining company and acquiring a patent.

ECONOMIST: Entrepreneurs in Latin America

Second, the issue of combined sewer overflows is one of the most difficult water-quality issues faced by cities with old infrastructure like New York City.

FORBES: Sustainability Lessons for the Big Apple