过去，人们使用了太多的地下水。
湿地对地下水，即地表以下的水量影响很大。
Wetlands have a big effect on groundwater, the amount of water below the surface of the land.
地下水位是地层岩石裂缝和孔隙充满水的边界。
The water table is the underground boundary below which all the cracks and pores are filled with water.
人们使用了太多的地下水，这些年来温度变得更高了。
People used too much underground water. The temperature has become higher over the years.
过度抽取地下水和建造成千上万的高层建筑加剧了地面沉降。
Land subsidence has been aggravated by overpumping of underground water and the construction of thousands of high-rise buildings.
地下水这个词描述的是水浸透土地，并填充所有可利用的空间。
Groundwater is the word used to describe water that saturates the ground, filling all the available spaces.
这种气体是硫化氢，上升后与石灰岩裂缝中地下水的氧气混合。
This gas is hydrogen sulfide, rises up and mixes with oxygen in the underground water that sits in the cracks and fissures in the limestone.
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。
The impact of rainfall upon the surface water and groundwater resources of the desert is greatly influenced by landforms.
从950多篇钻井日志中产出的对地下水问题的详尽研究刚刚发表。
Research from the exhaustive study of groundwater from over 950 drilling logs has just been published.
子弹将从冬季两项的射击目标上取出并回收，以防止铅污染地下水。
Bullets will be plucked from biathlon targets and recycled to keep the lead from poisoning ground water.
此外，新的咖啡种植技术会污染当地水源，最终会影响到全球的地下水。
In addition, new coffee-growing techniques are poisoning the water locally, and eventually the world's groundwater.
大家知道，地下水的分布是不均匀的，而且它们大部分都埋在很深的地方。
It is known that the distribution of groundwater is uneven, and that much of it lies at great depths.
由于像如砂岩和砾岩这样的沉积岩是多孔的，它们是地下水的重要潜在来源。
Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.
大部分的石灰岩和砂岩的蓄水层都是深而广的，但可能含有不可再生的地下水。
Most limestone and sandstone aquifers are deep and extensive but may contain groundwaters that are not being recharged.
一旦这些植物耗尽它们储存的水或者用完地下水源，它们就会停止生长并开始死亡。
Once these plants use up their stored reserve or tap out the underground supply, they cease growing and start to die.
这样的计划是非常必要的，因为在许多干旱地区，我们并不清楚其地下水资源的范围。
Such programs are much needed because in many arid lands there is only a vague idea of the extent of groundwater resources.
地下水的矿物含量通常随深度的增加而增加，但即使很浅的蓄水层中可能含盐量也很高。
The mineral content of groundwater normally increases with the depth, but even quite shallow aquifers can be highly saline.
这台发动机帮助解决了煤矿地下水的排放问题，并增加了其他地方蒸汽机所需的煤炭产量。
The engine helped solve the problem of draining coal mines of groundwater and increased the production of coal needed to power steam engines elsewhere.
研究人员指出，低频过程诸如河流流量和地下水水位的波动，通常不会对人类产生明显影响。
The researchers pointed out that low-frequency processes, such as fluctuations in stream flow and groundwater levels, would not usually be apparent to human populations.
大多数石灰岩和砂岩的蓄水层很深并且规模很大，但是它们含有的地下水可能是当前无法再生的。
Most limestone and sandstone aquifers are deep and extensive, but may contain groundwaters that are not being recharged.
在许多国家，数以百万计的灌溉井现在从地下水源抽水的速度，超过了降雨所能再次填满的速度。
Millions of irrigation wells in many countries are now pumping water out of underground sources faster than rainfall can refill them.
不像来自那些污秽场所的肉，它不会污染河流和小溪，不会大量消耗地下水，也不会引起滥伐森林。
Unlike meat from those filthy places, it will not pollute rivers and streams, deplete groundwater or cause deforestation.
这类植物通过生长出长长的主根来适应环境，这些主根可以向下渗透，直达地下水提供的充足水源。
These have adapted to the environment by the development of long taproots that penetrate downward until they approach the assured water supply provided by groundwater.
美国国家环境总署和世界银行开始拨款并着手调查干旱地区的地下水资源，以开发合适的开采技术。
The United Nations Environment Programme and the World Bank have funded attempts to survey the groundwater resources of arid lands and to develop appropriate extraction techniques.
注意“净值”这一词：测量地下水渗入并且渗出湖水的实际水量比仅仅推断出它们的差异要复杂得多。
Note the word "net" measuring the actual amounts of groundwater seepage into the lake and out of the lake is a much more complicated matter than merely inferring their difference.
它们缺乏储水结构，而且它们长在岩石表面，这阻止了它们利用地下水，所以它们反而形成了改变新陈代谢的能力。
They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.
目前在法国，有超过2万套的公寓是由温暖的地下水供暖的，这些地下水来自一个叫做巴黎盆地的地质构造的热储，位于巴黎附近。
More than 20,000 apartments in France are now heated by warm underground water drawn from a heat reservoir in a geologic structure near Paris called the Paris Basin.
环保主义者称引流河水将导致地下水位下降和水井干枯。
Environmentalists say that diverting water from the river will lower the water table and dry out wells.
灌溉产生的多余水分渗入地下水。
Excess water from irrigation sinks down into the water table.
我穿过地下水管。
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