Large dams have harmed Siberia's delicate ecological balance.

大坝损害了西伯利亚脆弱的生态平衡。

Beavers build dams and birds make nests.

海狸筑水坝，鸟筑巢。

Few creations of big technology capture the imagination like giant dams.

在大型技术的创造中，很少有能像大型水坝那样激发人们的想象力。

The new focus may be on removing existing dams and restoring natural habitats.

新的关注点可能是拆除现有的水坝，并恢复自然栖息地。

Your job, as captain of your soul, is to erect dams to keep these passions in check.

作为灵魂的船长，你的工作就是竖起堤坝来控制这些激情。

In fact, dams are primarily a strategy for dealing with annual variations in water levels.

事实上，水坝主要是应对水位年变化的一种策略。

Hydroelectric power and flood control and irrigation are possible without building monster dams.

水力发电、防洪和灌溉都不需要建造大型水坝。

Hydroelectric power and flood control and irrigation are possible without building monster dams.

水力发电、防洪和灌溉都不需要建造大型水坝。

These dams generate low-cost electricity and store water that is needed for agriculture and industry.

这些水坝能产生低成本的电力，并储存农业和工业所需的水。

The bank species was thought to resemble the muskrat in behavior, living in burrows or lodges and unable to build dams.

这种生活在岸边的物种被认为在行为上与麝鼠相似，生活在洞穴或小屋中，因此不能建造水坝。

How does one weigh the many different economic, cultural, and aesthetic considerations for removing or not removing these dams?

人们该如何考量众多不同的经济、文化和美学方面的因素，以决定是否拆除这些大坝？

Local economies, domestic water supplies, and certain types of recreation all would be severely impacted by destruction of these dams.

当地的经济、生活用水供应和某些类型的娱乐活动都将受到这些大坝破坏的严重影响。

Since the late 1990s, the government has stopped building large dams, instead focusing on removing existing dams and restoring natural habitats.

自上世纪90年代末以来，政府已经停止建造大型水坝，而是专注于拆除现有水坝，并恢复自然栖息地。

The removal of dams remains controversial because of high restoration costs, loss of low-cost electricity, and the loss of water storage facilities.

大坝的拆除仍然存在争议，因为高重建成本，损失低成本电力，以及损失蓄水设施。

These dams blocked access to upstream spawning beds for six species of salmon on what once was one of the most productive salmon rivers in the world.

这些水坝阻断了6种鲑鱼的上游产卵地，而这条河曾是世界上鲑鱼产量最高的河流之一。

As towns gradually expanded, water was brought from increasingly remote sources, leading to sophisticated engineering efforts such as dams and aqueducts.

随着城镇的逐渐扩大，水资源要从越来越远的地方获得，这就需要建造如水坝和引水渠这样复杂的工程。

Tens of millions of people have been forced to move from their homes—often with little warning or compensation—to make way for the reservoirs behind dams.

数千万人被迫离开家园——通常没有任何预先通知或补偿——只为给水坝后面的水库腾地方。

The filling of the Ataturk and other dams in Turkey has drastically reduced flows in the Euphrates, with potentially serious consequences for Syria and Iraq.

阿塔图尔克大坝以及土耳其境内其它大坝的填埋已经极大地减少了幼发拉底河的径流量，这可能会给叙利亚和伊拉克带来严重后果。

Dams, aqueducts and other kinds of infrastructure will still have to be built, particularly in developing countries where basic human needs have not been met.

大坝、引水渠和其他基础设施仍然需要修建，尤其是在人类基本需求尚未得到满足的发展中国家。

Government originally planned to remove the Elwha and Glines Dams in Washington, the enormous expense of removal has resulted in a postponement of this effort.

政府原本计划拆除华盛顿的艾尔瓦和格莱恩斯大坝，但巨大的拆除费用导致这一计划被推迟。

These beavers do know how to build dams, and do so if the need arises, as may occur if they are forced to relocate after felling and consuming all nearby trees.

这些海狸知道如何建造水坝，而且在有需要的时候就会这么做，比如当它们在砍伐和消耗了附近所有的树木后被迫迁移的时候。

Environmental groups now have a very good chance of forcing the removal of two major dams, the Glen Canyon Dam on the Colorado and the Hetch Hetchy Dam in Yosemite.

环保组织现在很可能会强制拆除掉两座重要大坝——科罗拉多的格伦峡谷大坝和约塞米蒂的赫奇赫奇大坝。

Building these dams provided cheap electricity, created jobs for workers, stimulated regional economic development, and allowed farming on lands that would otherwise be too dry.

修建这些水坝可提供廉价的电力，为工人创造就业机会，刺激了地区经济发展，并允许在否则将过于干燥的土地上进行耕种。

Until recently, the main reason for removing dams was to restore salmon runs, but it is now recognized that a more important reason to remove dams is that they are no longer safe.

直到近期，拆除大坝主要还是为了恢复鲑鱼的数量，但现在人们认识到，拆除大坝的一个更重要的原因是这些大坝已不再安全了。

With the advent of the five-year-plans, millions of women also began to toil in factories and in heavy construction, building dams, roads and steel mills in summer heat and winter frost.

随着“五年计划”的到来，数以百万计的妇女也开始在工厂和大型建筑工地、大坝、道路和钢铁厂中苦干，经受着夏天的酷热和冬天的严寒。

The need for more energy to power larger cities and economic growth therein leads to the construction of dams, the consequent flooding of ecosystems, and increased emissions of pollutants.

人们需要更多的能源支持更大的城市运转和经济增长，从而导致了水坝的建设，随之而来的生态系统的洪水，以及污染物的排放增加。

Where previously it had concentrated on the big infrastructure projects such as dams, roads and bridges, it began to switch to projects which directly improved the basic services of a country.

以前的重心是大坝、道路和桥梁等大型基础设施项目，现在开始转向直接改善国家基础服务的项目。

Beavers build dams along the river.

河狸沿河筑坝。

Their dams create floods on people's land.

它们的水坝引发洪水淹了人们的土地。

The beavers' dams slow down the speed of the river, especially after heavy rain.

河狸筑的水坝减缓了河水的流速，尤其是在大雨之后。