Short rainy seasons demand water storage, ideally in places where evaporation is low.
短暂的雨季需要储水，理想的是在蒸发低的地方进行储水。
Concrete is replacing water-hungry grass verges and new laws demand water-saving devices in all buildings.
在这里，混凝土取代了大量耗水的草坪，所有建筑物都将依法建设节水设备。
Fortunately — and unexpectedly — the demand for water is not rising as rapidly as some predicted.
一个意外的惊喜在于，人们对水的需求并没有像一些人预测的那样快速增长。
During the industrial revolution and population explosion of the 19th and 20th centuries, the demand for water rose dramatically.
在19世纪和20世纪的工业革命和人口激增期间，人们对水的需求急剧上升。
For all uses except the domestic demand of the poor, governments should price water to reflect its actual value.
除了困难人群的家用需求之外，水的所有用途，政府都应对其进行定价以反映其实际价值。
In processing foods after the agricultural stage, there are large additional uses of water that need to be tackled in a world of growing demand.
在农业阶段之后的食品加工过程中，有大量的额外用水需要在一个需求不断增长的世界中加以解决。
In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity.
从长远来看，在电力需求低于峰值的时期，偏远地区的大型风力发电场的电力可能会被用于电解水，以产生氢气。
During periods of low demand, jockey pumps are used to meet these lower water flow requirements.
在需求较低的时期，赛马泵用于满足这些较低的水流量要求。
Dr Corson's models show, however, that this inefficiency is true only if demand for water and the nutrients it contains is constant.
然而，科森博士的模型表明这种低效只有在对水和包含营养素的需求恒定的情况下才能发生。
Demand for water will grow as the world's population increases and as people eat more-and more meat in particular.
随着世界人口的增长，随着人们对食品的需求——尤其是对肉的需求的增长，对水的需求也会增长。
Equatorial glaciers will melt and river-flows fall, even as demand for water rises.
近赤道的冰山将会融化，恰恰在对水的需求增加的时候。
Demand for water will rise accordingly.
水需求也会随之增加。
Such demand for water is unsustainable.
对水的这种需求是难以为继的。
"There's more demand for bottled water now in schools, and the beverage industry says they have public health in mind," Yale's Brownell said.
“现在学校对瓶装水的需求更多了，及饮品业已经考虑到市民的健康，”耶鲁大学的布劳内尔说。
Sustained drought and insatiable upstream water demand have drained Lake Mead to the point that experts are predicting it may soon be shallow enough to be in deep trouble.
持续的干旱和上流不断增加的水需求已经使米德湖快要陷入专家预测中可能造成麻烦的低点。
The demand for water keeps increasing. Yet the amount of water on Earth stays the same.
人类对水的需求不断上升，但地球上水的还是保持不变。
Saudi Arabian water demand has increased by 500% in 25 years and is expected to double again in 20 years - as power demand surges as much as 10% a year.
沙特阿拉伯对水的需求在25年内增长了500%，在未来20年内还要再翻一番，与此同时，对电力的需求则是每年增长10%。
Growing water demand, driven by population growth and foreign land and water acquisitions, are straining the Nile's natural limits.
受人口增长及外国土地和水资源征用的驱动而增加的用水需求，正在挑战尼罗河的自然极限。
As more people eat more meat, rising demand by farmers will collide with contracting water supplies.
随着越来越多的人吃更多的肉，增加的需求将会和减少的供水起冲突。
Nature has decreed that the supply of water is fixed. Meanwhile demand rises inexorably as the world's population increases and enriches itself.
自然界规定了谁的储量是固定的，与此同时，伴随着世界人口的的急剧增加，水的需求量也就不可避免的迅猛增长。
But water cannot meet unlimited demand.
但是水资源并不能满足所有的需求。
Water and sediment flows to the delta have declined dramatically since the 1970s, due to both reduced rainfall and explosive urban and agricultural demand for water upstream.
1970年以来，由于降雨量的减少，加之黄河上游城市化与农业用水的爆发式增长，流到黄河三角洲的河水和泥沙在急剧减少。
Water and sediment flows to the delta have declined dramatically since the 1970s, due to both reduced rainfall and explosive urban and agricultural demand for water upstream.
1970年以来，由于降雨量的减少，加之黄河上游城市化与农业用水的爆发式增长，流到黄河三角洲的河水和泥沙在急剧减少。
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