随后，蒸汽动力登上了历史舞台，让整个水力发电的前景一度遭到了怀疑。
Then steam power entered the scene, putting the whole future of waterpower in doubt.
但是，沿河居住的当地人表示，他们从未被征询关于水力发电的计画。
But local people along the river say they have not been consulted about the hydroelectric schemes.
在美国，煤，天然气，核能以及水力发电的平均电价是一度电11美分。
U.S. residential customers pay an average of 11 cents per kilowatt-hour (kWh) for power from a mix of coal, natural gas, nuclear and hydroelectric sources, but renewables are far pricier.
这儿有很多以前的水力发电的制造厂和工厂，然而现在水能已不再被利用。
There are many former water powered mills and factories where the power of water is no longer harnessed.
但是，在某些地区对水力发电的不适当支持则对火电发电厂的业绩产生了负面影响。
Inadequate hydel support in some of the regions is adversely affecting the performance of the thermal power plants.
摘要：坝体工程是水电站的重要组成部分，其安全稳定对水力发电的利用有着重要影响。
Abstract: Hydraulic dam project is an important part of the hydroelectric power generation has an important impact on its security and stability on the use of hydroelectric power.
沼气、太阳能、风力和水力发电的利用可减少旅游开发可能给社区带来的对自然资源的过度压力。
The utilization of methane, solar energy, wind power and hydroelectric power can reduce the overpressure of natural resources to communities caused by tourist development.
沼气、太阳能、风力和水力发电的利用可减少旅游开发可能给社区带来的对自然资源的过度压力。
The introduction of bio-gas, solar energy, wind power and hydropower to communities helps relieve the potential excessive pressure intrigued on natural resources by tourism development.
从全球层面来看，预期气候变化对现有全球水力发电的整体影响较小，甚至可能产生一些积极影响。
At the global level, the overall impact of climate change on existing hydropower generation may be expected to be small, or even slightly positive.
因此，问题在于是否可以找到一个可行的办法，既能利用水力发电的优点，又能避免建水库造成的不良影响。
The question, therefore, is whether there is a way to get the advantages of hydropower without the drawbacks.
很多国家都采用水力发电的形式，如：印度、巴基斯坦、埃及、美国、澳大利亚和乌干达。各国均先从水资源中获取能量，然后再用它灌溉耕地，生产粮食作物。
There are many countries which use hydro-electricity: India, Pakistan, Egypt, America, Australia and Uganda all produce power from water and then use the water again on the land in order to grow food.
土耳其计划利用底格里斯河与幼发拉底河的水来建造大型水力发电工程。
Turkey plans to harness the waters of the Tigris and Euphrates rivers for big hydro-electric power projects.
在不到十年的时间里，单个发电站的发电能力就从几千瓦上升到了几兆瓦，其中许多是水力发电站。
The capacity of individual power stations, many of them hydro plants, rose from a few kilowatts to over a megawatt in less than a decade.
在接下来的几个世纪里，在整个罗马帝国以及在中东和北欧边界以外的地方建造了越来越复杂的水力发电厂。
In the following centuries, increasingly sophisticated waterpower mills were built throughout the Roman Empire and beyond its boundaries in the Middle East and northern Europe.
不过最大和最小的可再生能源——水力发电和地热发电都只增加了3%的容量。
Yet the biggest source of renewables, hydropower, and the smallest, geothermal, both only added 3% to capacity.
他们说，至少几十年维持三文鱼数量的唯一可选择的办法是在一年里最热的时间减少为了水力发电而修建的分水渠。
The only option that preserved salmon populations, at least for a few decades, was to reduce the diversions for hydropower generation at the warmest time of the year, they said.
还有风力、水力发电和生物燃料……目前的趋势是他们将消耗更多的能量。
Same for wind, hydro and biomass... the trend is that they will continue to consume more energy.
能源密集是世界上许多炼厂位于电力资源丰富地区的原因（水力发电、天然气、煤炭或核电）。
That energy intensity is why the world's smelters tend to be located in areas that have access to abundant power resources (hydroelectric, natural gas, coal or nuclear).
但是最大的原因是在1837年由小石头和木材构建的爱德华兹水坝，它被用来水力发电，水坝阻拦了鱼群到达它们的产卵地。
But the biggest culprit was the Edwards Dam — a small stone-and-timber structure built in 1837 for hydropower generation that blocked the fish from reaching their spawning grounds.
但是最大的原因是在1837年由小石头和木材构建的爱德华兹水坝，它被用来水力发电，水坝阻拦了鱼群到达它们的产卵地。
But the biggest culprit was the Edwards Dam — a small stone-and-timber structure built in 1837 for hydropower generation that blocked the fish from reaching their spawning grounds.
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