他想用该水来灌溉贫瘠的沙漠土地。
这片农田多丘陵，而且灌溉条件很差。
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.
这些河流在一个重要的灌溉系统的北部汇合了。
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.
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。
这是一项为期三年的灌溉工程。
清澈的水涌进了灌溉渠道。
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.
这些运行大多要从当地河湖里抽取灌溉水。
Most of these operations draw irrigation water from local rivers or lakes.
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.
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.
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.
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.
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.
最重要的是，亚马逊河灌溉着地球上最大的热带雨林。
Most important of all, the Amazon irrigates the largest tropical rainforest on earth.
我又在水利灌溉方面工作了，这次是作为项目研究助理。
I'm working in water irrigation again, this time as a project research assistant.
采用咸淡水交替灌溉可以降低土壤含盐量，增加棉花产量。
Irrigation with saltish and fresh alternatively can decrease soil salt content and increase cotton yield.
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.
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.
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.
相反，美国41%的水投向了农业，并几乎全都用在了灌溉上。
In the United States, by contrast, 41% water goes for agriculture, almost all of it for irrigation.
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.
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.
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