The water supply is adequate for many purposes and for many regions . 水源对许多目的和许多地区都有用。
Many of our largest cities obtain their water supplies from surface water . 我们许多大城市从地表水获得水源。
This law says that the public owns the rivers and all the water in them . 这条法律规定,公众拥有河流及河中的全部水源。
There is limited rainfall in the valley, and the rivers get most of their water from the mountains . 这一谷地的降水量不大,河流主要是从山区得到水源。
In many cases inferior-quality, and often polluted, water supplies must be utilized to meet the demand . 在许多情况下,必须利用劣质以及常常是被污染的水源来满足需要。
For many years the attention of environmental engineering was devoted largely to the development of safe water supplies . 在环境工程方面,人们多年来把注意力集中在水源的开发上。
Both industries and growing populations draw heavily on rivers and aquifers, water resources which are already limited . 工业和增长着的人口都从水源已经有限的河流和地下水层中抽取大量的水。
It was perfectly unadorned, but the garden possessed magnificent shady trees, and a chain of tanks fed by running spring water . 花园里完全不施点缀,只有伟丽成荫的树木和一脉相连的池沼,由外边奔流的山泉,接济着水源。
It never affects water source and environment 绝不会对水源和环境产生任何影响。