水源枯竭

水源枯竭。

The water source has dried up .

这里的水源枯竭，严重威胁着农业生产。

The water source has dried up and agriculture production is severely threatened .

随着生态系统发生变化，沙漠面积不断扩大，粮食生产日渐减少，水源枯竭，人口也不得不迁移，搬到更适宜居住的地区。

As ecosystems change and deserts expand , food production diminishes , water sources dry up and populations are pressured to move to more hospitable areas .

在经济发展，科技进步和人丁兴旺的二十一世纪，伴随而至的是全球变暖臭氧层变薄，空气污染、水源枯竭等环境问题。

In the twentieth century , the earth is getting warmer and warmer with the development of economics , technology and population . There appear many environmental problems such as the thinner ozone layer , air pollution and dried-up water resources .

旱灾是自然界的一种异常现象，是在一定时期内降水少于某一量级，导致土壤严重缺水，地表水源枯竭，危及作物生长发育的气象灾害。

Drought is a natural anomaly Precipitation in a certain period of time less than a certain order of magnitude , resulting in serious water shortage soil , surface water sources drying up , endangering crop growth and development of meteorological disasters .

一旦城镇周边区域环境遭到破坏，水土流失、土壤板结，水源枯竭，则给城镇提供的食物、水源、原材料等就会减少，从而限制城镇化。

Once the environment of towns and its surrounding was destructed , soil erosion , soil hardens , water depletion would be appear , which can cause provision of food , water , raw materials for towns to be reduced , and limit the urbanization .

长时间干旱，水源都枯竭了。

The long drought dried up the source .

南湖水源日趋枯竭，存在着干涸的趋势。

The water source of Nan Lake in Changchun city is drying up .

本文从水文地质、工程地质以及地下水动力学角度出发，对铁路隧道岩溶涌水涌泥规律进行了分析，对涌水造成的地表塌陷以及地表水和地下水源的枯竭也进行了探讨。

This paper analyzes the regularity of water inflow and soil leakage into tunnel , and discusses the surface settlement caused by water inflow and the exhaustion of surface water and subsurface water from the angle of the hydrogeology , the engineering geology , and the underground water dynamics .

这些人类活动污染着水源并使之枯竭，改变着生境并使之退化，并且正在改变全球气候。

Most of these extinctions are tied to human activities that are polluting and depleting water resources , changing and degrading habitats and altering the global climate .