Water was the main source of mechanical power, and by the end of the seventeenth century, England alone is thought to have had some 20,000 working mills.
水是机械动力的主要来源，而到了17世纪末，人们认为仅英格兰就有2万个左右的工作磨坊。
Some scholars argue that the concentration of water within the urban core of these sites provided a centralized source of political authority for Maya elites based largely on controlled water access.
一些学者认为，集中在这些地点的城市核心区的水资源为玛雅精英提供了一个集中的政治权力来源，而这些权力主要是基于对水资源的控制。
Where is the nearest water source?
最近的水源在哪里？
More than 900 metres high, on the mountain's north face, lies an all-important source of pure water.
在这座山的北面，海拔900米以上的位置有一个非常重要的纯净水水源地。
One day, a farmer was looking for a water source for his farm.
一天，一个农夫正在为他的农场寻找水源。
On the one hand, the elephants' main lake, their only water source (来源), dried up.
一方面，大象的主要湖泊饮水处，也是他们唯一的水源，已经干涸了。
Although he went through a hard time, the farmer never became discouraged from achieving his goal—providing his village with a clean water source.
尽管经历了一段艰难的时期，这位农民在实现他的目标时从未气馁——为他的村庄提供干净的水源。
Sadiman realized that the land was in need of some water when the Gendol River—previously the source of water for villagers—was quickly drying up.
当根多尔河（以前是村民的水源）迅速干涸时，赛迪曼意识到土地需要一些水。
The incidence of childhood diarrhoea declined dramatically between 2005 and 2006, irrespective of water source.
2005年到2006年期间，不管水源如何，儿童患有腹泻的发生率都有大幅度的降低。
A billion people worldwide lack access to an improved water source; 2.5 billion lack access to improved sanitation.
世界各国有10亿人无法获得经过改善的水源；25亿人无法享受经过改善的环境卫生。
A woman visits a water source for the Roman baths in Allianoi in 2008.
2008年，一位女士参观了位于Allianoi的罗马浴场水源。
If the water you are using comes from a well or water source that is not treated with chlorine, add two drops of non-scented liquid household chlorine bleach to each gallon of water.
如果你使用的水来自水井或没有用氯气处理过的水源，就在每加仑水滴两滴家用氯气漂白剂。用原装盖把容器拧紧。
The exhibition will focus on three topics: water source protection, global warming and the aging problem.
该展区主要有三个主题：保护水源，全球变暖问题和老龄化问题。
GAPs investigations show that every single water source in the region was intensively and relentlessly exploited.
GAP项目调查显示，这块区域里每一个单独的水资源已经被无情地过度开发了。
For example, an accessible water source liberates them from the hours often spent collecting water, and adequate school toilets make it more likely that girls will attend classes.
例如，可利用的水源使她们摆脱通常用于采集饮用水的时间，并且充足的学校厕所使女孩更可能去学校上课。
If you're already walking 5 km to the nearest stream to get water, by 2050, it's going to mean walking 30 km or moving your whole household closer to the water source.
如果现在需要徒步到5公里以外最近的水源地取水，到2050年就意味着要到30公里之外，或者只能搬到离水源更近的地方。
Hmong girls return to camp after doing chores at the local water source.
苗族少女在附近的水源地做完家务事后返回营寨。
Liuzhou's principal water source for industrial, commercial, and residential use is the Liujiang River.
柳江是柳州市工业、商业和居民生活用水的主要水源。
Malapa, it seems, was both a water source that gave life and a trap that snuffed it out.
现在看来，马拉帕过去既是供养生命的水源地，也是扼杀生命的陷阱。
Radon can also be found in drinking water, the concentration depending on the water source, and this can sometimes present a hazard.
饮用水中也可找到氡，浓度取决于水源，有时可造成危害。
The spherical design features a handle that allows the tub to be easily wheeled to a water source.
圆形加手柄设计方便将其滚至水源点。
Air Operated - Uses auxiliary compressed air or water source to shift valve, rather than a solenoid operator.
气动—使用辅助压缩空气或水的来源转变阀，而不是一个螺线管操作。
24once the city's main water source, the Los Angeles River is now a concrete channel fed by storm drains.
曾经作为城市主要水源的洛杉矶河，现在是一条混凝土渠道，用于暴雨排水渠。
89% of the population in that region now have access to an improved water source, up from just 69% in 1990.
该地区能够获得安全水源的人口从1990年的只有69%增长到现在的89%。
CLEAN WATER: A boy drinks water from a communal clean water source next to a contaminated river in Masiphumelele, Cape Town, South Africa. (Photo: ZUMA Press)
洁净水：在南非开普敦的马斯弗梅勒勒，一个小男孩正在喝水，水来自毗邻一条受污染河流的社区洁净水源。
CLEAN WATER: A boy drinks water from a communal clean water source next to a contaminated river in Masiphumelele, Cape Town, South Africa. (Photo: ZUMA Press)
洁净水：在南非开普敦的马斯弗梅勒勒，一个小男孩正在喝水，水来自毗邻一条受污染河流的社区洁净水源。
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