With a little help from this carbonic acid, moving water forms most of the world's limestone caves.
在这种碳酸的帮助下，流动的水创造了世界上大部分的石灰岩洞穴。
This shift in philosophy has not been universally accepted, and it comes with strong opposition from some established water organisations.
这种观念上的转变并没有被普遍接受，而且一些已建立水资源组织的强烈反对随之而来。
Residents were warned not to be extravagant with water, in view of the low rainfall this year.
鉴于今年降雨量少，居民被告诫不得浪费用水。
523 students cleaned their teeth within ten minutes of eating. When possible, they used a toothbrush; when this was impossible, they washed their mouth thoroughly with water.
523名学生在吃饭后十分钟内刷牙。如果情况允许的话，他们会使用牙刷；否则，他们会用水彻底清洗口腔。
Yet there is a dark side to this picture: despite our progress, half of the world's population still suffers, with water services inferior to those available to the ancient Greeks and Romans.
然而，这种情况也有其黑暗的一面：尽管我们取得了进步，世界上仍有一半的人口在受苦，供水服务还不如古希腊和古罗马人。
523 students cleaned their teeth within ten minutes of eating when possible they used a toothbrush, when this was impossible they washed their mouth thoroughly with water.
523名学生在吃饭后十分钟内刷牙。如果情况允许的话，他们会使用牙刷；否则，他们会用水彻底清洗口腔。
This gas is hydrogen sulfide, rises up and mixes with oxygen in the underground water that sits in the cracks and fissures in the limestone.
这种气体是硫化氢，上升后与石灰岩裂缝中地下水的氧气混合。
This could cause rapid growth of water plants in the river, which can lead to the water ways getting clogged with organisms, which can change the flow of the water.
这可能会导致河里的水生植物快速生长，从而导致水道被生物体堵塞，从而改变水流。
This heated air, drawn down from the roof, then mixes with the greenhouse air as it reaches a second sea-water-moistened cardboard wall at the back of the greenhouse.
从屋顶吸出的这种热空气，在到达温室后部第二个被海水润湿的纸板壁时，便与温室空气混合。
Confronted with this evidence, several bottled-water manufacturers including Nestle and Coca-Cola undertook their own studies using the same methodology.
面对这些证据，包括雀巢和可口可乐在内的几家瓶装水生产商也用同样的方法进行了自己的研究。
This village used to fight with water shortage, but now we have enough water because of him.
这个村子过去常与缺水作斗争，但现在因为他，我们有了足够的水源。
To test this, researchers asked 20 people to pick up marbles from water with their hands.
为了测试这一点，研究人员让20人用手从水中捡弹珠。
When the old man knew about this, he gave the boy an empty bowl and asked him to go to the river and fill the bowl with water.
老人知道这件事时，他给了男孩一个空碗，让他去河边把碗装满水。
Fronting water and with a hill at the back, this garden had a dense growth of evergreen trees and formed a "retreat away from the world".
这花园依山傍水，四面苍松翠柏，绿树成荫，仿佛是世外桃源。
When this glass coating contact with sea water, it releases copper ions which inhibit adhesion of sea creatures.
当此玻璃涂层与海水接触时，释放出的铜离子阻止海洋生物附着在涂层上。
Plant have the power to take this gas from the air, combine it with water, and make it into their tissues; in fact, it is from this source that all organic carbon comes.
植物有能力从空气中吸收二氧化碳，使之与水化合转化成植物的组织，实际上，所有有机碳化合物都是通过这种方式形成的。
Whereas large animals swim by pushing against water with their fins or limbs, this approach is ineffective at very small scales.
而大型动物通过用它们的鳍或肢体滑水的方式游泳，这种方式在微观比例下是低效率的。
But with this new irrigation system, it helps bring enough water for them to grow three crops a year.
但有了这个新的灌溉系统后，它供的水一年够他们种三季了。
Above all, travellers should be very careful with food and water, including ice, and remember this simple rule: boil it, cook it, peel it, or forget it.
最重要的是，旅行者应对食物和水(包括冰)十分谨慎，并记住这一简单规则：煮沸，煮熟，削皮或忘掉。
Carbon dioxide forms an acid when it dissolves in water. This acid can react with minerals to form carbonates, locking away the carbon in a relatively inert state.
二氧化碳溶解于水的时候形成一种酸，这种酸可以跟矿物起反应生成碳酸盐，这样就能够以相对稳定的状态将碳密闭起来。
This means that, in theory, anyone with access to water can use it to create a cheap, clean, and available source of fuel.
在理论上，这意味着只要有水，利用这个设备就能研制出一种低廉、洁净的可利用能源。
Whereas Western Europe and the US emerge from this analysis with good scores on water stress facing their citizens, wildlife there that depends on water is much less secure, it concludes.
结论是，鉴于该分析中西欧和美国市民面对的水压力出现了好成绩，那里依赖水的野生物更不安全。
This means supplying them with emergency shelter, distributing relief and providing clean water to prevent epidemics.
即是为他们提供紧急住所，减轻他们的痛苦以及供应清洁用水以预防流行疾病。
This week, Goodna was contending with over 26 feet of water in normally populated areas.
本周，古纳普通的住宅区的水位已经达到26英尺。
Fill your dish washer and washing machine with a full load - this will save you water, electricity, and washing powder.
将你的洗衣机和洗碗机装满，这样会节约水，电和洗衣粉。
"Like this," he said, pantomiming filling a bowl with water and dumping it over his head.
“就像这样，”他一边说，一边做了个用碗舀水浇到头上的动作。
The trouble with this conclusion is that no one knows how much water people can safely use.
不过这种结论的麻烦是，没人知道可供人类使用的安全水量究竟有多少。
To this day, American states regard each other with suspicion where water is concerned.
直到今天，当涉及水资源问题时，美国各州彼此间仍心存猜疑。
To this day, American states regard each other with suspicion where water is concerned.
直到今天，当涉及水资源问题时，美国各州彼此间仍心存猜疑。
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