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。
Fortunately — and unexpectedly — the demand for water is not rising as rapidly as some predicted.
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。
During the industrial revolution and population explosion of the 19th and 20th centuries, the demand for water rose dramatically.
干旱时期，上调价格以降低人们对水的需求。
In periods of drought, its price would increase and people would therefore demand less.
随着人口的增长，人们对水的需求也会增加。
Demands for water will go up along with the expanding population.
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。
Demand for water will grow as the world's population increases and as people eat more-and more meat in particular.
同时，人们的精神需求不断进步，对“亲水”文化感情的渴看日益加深，促使滨水区的景观、游憩、旅游功能日益彰显。
Meanwhile, human's demand in spirit is increasing, as well as the culture aspiration to the water-liking, which promotes the function in sightseeing, recreation, and tourism.
土壤覆盖是人们可以为自己花园作的最好事情之一，它保持土壤不会变干，从而也减少了对水的需求量，它还限制土壤的温度变化。
Mulching is one of the best things people can do for their gardens. It helps keep the soil from getting dry, so it reduces the need for watering. It also limits temperature changes in the soil.
拉斯维加斯的含水地下层已经干涸了，Meade湖的水已经不能维持这座旅游业城市的需求了，这使人们对它还能支撑多久抱有大量的怀疑。
The Las Vegas aquifer has dried up, and Lake Meade can't support the demand of this tourist-heavy metropolis, leaving it asking very hard questions about sustainability.
拉斯维加斯的含水地下层已经干涸了，Meade湖的水已经不能维持这座旅游业城市的需求了，这使人们对它还能支撑多久抱有大量的怀疑。
The Las Vegas aquifer has dried up, and Lake Meade can't support the demand of this tourist-heavy metropolis, leaving it asking very hard questions about sustainability.
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