The impact of rainfall upon the surface water and groundwater resources of the desert is greatly influenced by landforms.
降雨对于沙漠地表水和地下水资源的影响很大程度上取决于地形。
Also, in surface water, there is a weak acid, carbonic acid, not sulfuric acid, but carbonic acid that helps dissolve the rock.
另外，在地表水中存在一种弱酸，它是碳酸，而不是硫酸，而且是能帮助溶解岩石的碳酸。
And, since they were created underground and not from flowing surface water, not all these passageways have an opening to the outside world.
并且，由于它们是在地下形成的，而不是由地表水流形成，所以并不是所有的通道都有通向外部世界的开口。
Within about a millimeter of the water, air temperature is close to that of the surface water, and the air is nearly saturated with water vapor.
在离水不到一毫米的地方，空气的温度接近于地表水的温度，空气中的水蒸气几乎饱和了。
Conversely, a pond with a stream flowing in one end and out the other, which dries up when the stream dries up, is clearly surface water dominated.
相反，有径流从两端流进流出的池塘，在径流枯竭的时候也会干涸，地表水就明显占据主导地位。
Recently, researchers have used data collected by monitoring surface water temperatures to improve the ability of a reef to recover from bleaching.
最近，研究人员通过监测表面水温获得数据，并用此数据来提升珊瑚礁从漂白状态中恢复的能力。
Because the surface of the water table is not flat but instead rises and falls with topography, groundwater is affected by gravity in the same fashion as surface water.
由于地下水位不是平面的，而是随着地形起伏的，所以地下水和地表水一样受到重力的影响。
The latter two sources are limited to those few areas where surface water seeps down through underground faults or fractures to reach deep rocks heated by the recent activity of molten rock material.
后两种来源局限于少数区域，在这些区域，地表水通过地下断层或断裂往下渗透，从而接触到被近期的熔岩活动加热的深层岩石。
Sunlight and surface water play no role. It's amazing!
阳光和地表水在这里没有扮演任何角色，这太让人惊奇了。
So there must be surface water too — even if it is loaded with arsenic.
所以必须表面也有水——即使它里面装满了砷。
The storms simply couldn't continue on without warm surface water to sustain them.
暴风雨没有温暖的表层海水，根本难以持续。
As water becomes ever scarcer, far too many people are driven to drink from filthy surface water.
随着水资源变得越来越稀少，太多的人被迫饮用地表的污水。
Earth is right for life because of its gas atmosphere, surface water and moderately warm temperatures.
地球最适宜于生命的存在，因为地球有大气层、地表水和适宜的温度。
She makes her home in urban Ghana where, as she describes, "Any surface water is an open sewage stream."
正如她所说，她的家在加纳市区，“在那里，任何地表水都是开源污水流。”
These sources of water normally have much higher concentrations of radon than surface water from rivers, lakes and streams.
这些水源通常比河流、湖泊和小溪的地表水具有高得多的氡浓度。
After 220 years of European settlement, the world's second-dryest continent (after Antarctica) is running out of surface water.
欧洲人登上这片土地220年之后，世界第二干旱的大陆(排在南极洲后面)正在耗尽它的地表水。
The new study presents a third way to detect tsunamis — by changes in the texture of the surface water across a wide span of the open ocean.
高丁所取得的成果则为探测海啸提供了第三种办法，即在开阔海面上探测海啸引起的海水表面布局的变化情况。
In some places it is indeed replenished quite quickly if rain or surface water is available and the geological and soil conditions are favourable.
确实，在一些雨水和地表水丰富并且地质和土壤环境理想的地方，地下含水层可以很快就得到补充。
Water coming up from below will often have a lower ph than the surface water, because at depth there is no photosynthesis but plenty of respiration.
从地表深层涌出来的水往往比地表水的PH值要低，因为深层除了足够多的呼吸作用外没有任何的光合作用。
Surface water-mostly rivers, lakes and reservoirs-will not flow from one basin into another without artificial diversion, and usually only with pumping.
包括主要由河流、湖泊、和水库组成的地表水必须要通过人工引流才能从一个盆地进入另一个盆地，很多时候能够依赖的技术只有水泵。
That means the drug-tainted wastewater can enter groundwater and surface water, which are collectively the major sources of drinking water for most people.
这就意味着这些被药物污染的废水会进入地表水和地下水，而这正是大部分人饮用水的水源。
By clarifying the waters in the gyres, the team robbed the gyres' shallowest waters of heat-a crucial change, since warm surface water is fuel for strong tropical cyclones.
研究小组借由环流水域的澄清，去除了环流最浅水域的热含量——这是至关重要的改变，因为温暖的海水表面，是强热带气旋的动力来源。
This study is part of efforts by the U.S. Geological Survey's National Water-Quality Assessment Program to monitor the quality of the nation's groundwater and surface water.
这项科学研究是美国地质调查局国家水质评估项目的一部分，旨在对美国地下和地表水质进行检测。
As most surface water from lakes and rivers in Texas have already been claimed by varying districts across Texas, most counties are now looking at groundwater to meet future demand.
由于德克萨斯州湖泊与河流的大多地表水已被横跨德州的不同区域瓜分，很多郡开始把目光投向地下水以满足未来的需求。
The Nanning Urban Environment Project will assist Nanning Municipality in Guangxi Zhuang Autonomous Region to stop the deterioration of surface water quality in selected urban centers.
南宁城市环境项目将协助广西壮族自治区南宁市遏止部分中心城区地表水质进一步恶化趋势。
Arranged in barrels of concrete or plastic, these biosand water filtration systems (BSFs) remove 95 to 99 percent of the bacteria, viruses, worms and particles contained in rain or surface water.
通过混凝土桶和塑料桶的处理，生物沙子饮用水过滤系统可以净化95％到99％的细菌、病毒、蠕虫、雨水或者地表水污染颗粒。
With no surface water, few aquifers, and little rainfall, the city used desalinization plants to convert ocean water to freshwater, ornamenting the city with golf courses, gardens, and palm trees.
由于表面缺少淡水、地下含水很少以及降雨量稀少，迪拜用有脱盐作用的植物把海水转化为淡水。高尔夫球场、各种园林和高大的棕榈树点缀着整个城市。
With no surface water, few aquifers, and little rainfall, the city used desalinization plants to convert ocean water to freshwater, ornamenting the city with golf courses, gardens, and palm trees.
由于表面缺少淡水、地下含水很少以及降雨量稀少，迪拜用有脱盐作用的植物把海水转化为淡水。高尔夫球场、各种园林和高大的棕榈树点缀着整个城市。
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