在某些情况下河流干涸由于过度沉。
In some cases streams dry up as a result of excessive silting.
它们与地球上的河流系统非常相似，地质学家认为它们是早已消失的河流留下的干涸的河床。
They bear a strong resemblance to river systems on Earth, and geologists think that they are dried-up beds of long-gone rivers.
地下水通常聚集在河流流域，但在干旱地区，地下水也可能完全保留在干涸河床的表面之下。
Groundwater commonly collects in stream drainages but may remain entirely beneath the surface of dry stream-beds in arid regions.
现在，所有的河流和湖泊不是干涸就是被污染了。
“一旦他们开始开矿，大山将被夷为平地，河流会干涸，我们会失去维生方式，”他说道，“我们会成为离水之鱼。”
"Once they start mining the mountain will be bulldozed and the rivers will dry up and our livelihood will be lost," he says. "We will become fish out of water."
咸海的干涸是由于汇入咸海的河流被过度使用。
格莱斯说：“大家都听说过这严酷的说法：珍贵的表土因过度耕作肥力降低，亚洲上空尘云遮蔽，焦干的土地荒漠化，河流行将干涸。”
"We've all heard the stark anecdotes: precious topsoil weakened by over-farming, dust clouds darkening the Asian skies, parched land becoming desert and rivers running dry, " said Mr Grice.
但是在边缘地带，其数量有所减少，主要归咎于其生活环境的改变、水坝建设、河流改道、湿地干涸以及环境污染。
On the periphery of its range, populations have declined, primarily due to habitat modification, dam construction, river flow modification, wetland drainage, and pollution.
以我们已经看到的巴西南部为例，由亚马逊的水汽形成的河流将要干涸了。
What we are seeing already for example in southern Brazil, which is in the wake of the river of water vapor coming from the Amazon, is already a drying up.
随着河流的干涸，水坝放干了水，涡轮停止了工作。
With rivers down to a trickle or drying up completely, DAMS are running out of water; some are empty. Turbines have shut down.
鲁珀特，默多克——我们这个时代的比弗布鲁克一曾把分类广告形容成报业的金河，但是，正如去年他所说的，“有时河流会干涸”。
Rupert Murdoch, the Beaverbrook of our age, once described them as the industry's rivers of gold-but, as he said last year, "Sometimes rivers dry up."
倡假如现在就不再有雨水落进大西洋，假如一切河流的水现在也都不往大西洋里面流，那么大西洋大约再过4000年就会干涸。
But suppose no more rain fell into it and no more water was brought to it by rivers. It would take the ocean about 4, 000 years to dry up.
62岁的部落首领费利克斯 • 基斯佩(Felix Quispe)说，几千年来他们赖以生存的那条河流正逐渐干涸。
The tribal chief, 62-year-old Felix Quispe, 62, says the river that has sustained them for millennia is drying up.
一项《干旱法案》获得通过，水配给制广泛实施-一些河流，如Sheffield的Don河和Sheaf河，几乎干涸。
A Drought Act was passed and there was widespread water rationing - some rivers, such as the Don and Sheaf in Sheffield, almost dried up.
组成生命所需的流动水可能存在于地下，可能有时仍能在表层看见，表层中干涸的河流湖泊表明流动水曾经很普遍。
Liquid water-which is the form life needs-may well exist underground, and may still sometimes be seen at the surface, where dried-up rivers and lakes suggest it was once commonplace.
火星地下很可能存在生命所需的液态，有时甚至在表层都能看见液态水——表层中干涸的河流湖泊表明其一度很普遍。
Liquid water-which is the form life needs-may well exist underground, and may still sometimes be seen at the surface, where dried-up rivers and lakes suggest it was once commonplace.
遇上旱季河流和湖泊干涸时，食物变得匮乏，食人鱼就开始吃肉，基本上是吃其他鱼类。
But in the dry season when ponds and rivers dry up and food becomes more scarce, piranha turn to meat-eating, usually in the form of other fish.
在远北的gulfcountry和约克角半岛，广阔的无人区被数不清的干涸河床划成无数小块，而到了雨季，这些河床会变成溢水的河流。
In the far northern gulf country and cape york peninsula there are huge empty regions cut by countless dry riverbeds which can become overflowing rivers in the wet season.
一名医生告诉BBC，他已清点了83具尸体，骤雨冲倒了帕克库河岸周边的数百座木屋，这条河流已干涸数年。
A doctor told the BBC he'd counted 83 bodies. Torrential rain swept away several hundred shanty homes in Pakokku, built around a riverbed which had been dried for several years.
沙质沉积物主要来源于现代流水作用、干涸湖泊和河流故道。
The sandy materials mainly originate from modern fluvial action, dry lake deflation and older river courses.
若是没有树，水土流失踪，河流变干涸。
有时涓涓河流也干涸见底。
一些水库几近干涸，一些河流的流量不到常年的三分之一。
Some reservoirs are nearly empty while the volume of water in some rivers is down to a third of its normal level.
一些水库几近干涸，一些河流的流量不到常年的三分之一。
Some reservoirs are nearly empty while the volume of water in some rivers is down to a third of its normal level.
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