他想用该水来灌溉贫瘠的沙漠土地。
如果该灌溉计划继续的话，这对鸟类可能预示着灾难。
If the irrigation plan goes ahead, it could spell disaster for the birds.
这些河流在一个重要的灌溉系统的北部汇合了。
鲍威尔湖的水没有被用来灌溉这一地区。
None of the water from Lake Powell is used to irrigate the area.
这片农田多丘陵，而且灌溉条件很差。
灌溉产生的多余水分渗入地下水。
Excess water from irrigation sinks down into the water table.
干旱地区需要灌溉才能使作物生长。
水力发电、防洪和灌溉都不需要建造大型水坝。
Hydroelectric power and flood control and irrigation are possible without building monster dams.
水力发电、防洪和灌溉都不需要建造大型水坝。
Hydroelectric power and flood control and irrigation are possible without building monster dams.
某些灌溉措施会降低土壤质量，降低农业生产力。
Certain irrigation practices degrade soil quality and reduce agricultural productivity.
运河的小堵塞或崩塌会阻塞错综复杂的灌溉网络。
Small blockages or collapses of the canal would choke the intricate irrigation networks.
他们在特奥蒂瓦坎山谷广泛灌溉的需要增加了。
They increased the need for extensive irrigation in the Teotihuacán Valley.
这些管道被认为是为灌溉地表而修建的运河系统。
The lines were thought to have been a system of canals that had been built to irrigate the surface.
这里最大的难题就是灌溉，因为这消耗了世界上70%的淡水。
The biggest challenge here is irrigation, which consumes 70% of the world's fresh water.
该项目资助小型灌溉系统、支路和其他类型的社区基础设施。
The project finances small scale irrigation systems, feeder roads and other types of community infrastructure.
只有使用现代的灌溉方法，我们才能减少农业用水短缺的情况。
Only by using modern irrigation methods can we reduce water shortage in agriculture.
在发展中国家，灌溉是人类排泄物的主要农业用途。
Irrigation is the primary agricultural use of human waste in the developing world.
唐娜帮助村民们规划了一个灌溉工程，还建议他们种庄稼。
Donna helped the people of the village to organize an irrigation project, and she also advised them on planting crops.
利用效率低的原因是采用了中国一些传统的灌溉方式。
The low utilization efficiency has resulted from the adoption of some traditional Chinese irrigation methods.
更糟糕的是，一些中国传统的灌溉方式浪费的水量令人惊讶。
To make matters worse, some of the traditional Chinese irrigation methods have wasted an astonishing amount of water.
正是这点使得灌溉的统筹，特别是建造运河以疏导和保护水，变得至关重要。
It was this that made the organization of irrigation, particularly the building of canals to channel and preserve the water, essential.
在贫穷、干旱的地区，未经处理的废水是让农民维持生计的唯一可用灌溉资源。
In poor, dry regions, untreated wastewater is the only viable irrigation source to keep farmers in business.
“有效”灌溉通常指的都是一些让85%的水最终以水汽的形式逸散的作法。
"Efficient" irrigation is often used to describe systems that result in 85% of the water disappearing in vapor.
清澈的水涌进了灌溉渠道。
这是一项为期三年的灌溉工程。
除非在这里修个水库，才能解决灌溉问题。
Only when a reservoir is built here can we solve our irrigation problem.
这种情形始于在目标地区（如废弃矿井或被污水污染的灌溉池）种植超积累物种。
This scenario begins with the planting of hyperaccumulating species in the target area, such as an abandoned mine or an irrigation pond contaminated by runoff.
更好的灌溉可以显著提高作物产量；目前，全球约40%的粮食供应都来自于灌溉地。
Better irrigation can dramatically improve crop yield and about 40% of the world's food supply is currently derived from irrigated land.
然而，灌溉用水的来源往往不是可持续的。
However, water used in irrigation is often sourced unsustainably.
然而，灌溉用水的来源往往不是可持续的。
However, water used in irrigation is often sourced unsustainably.
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