Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.
然而，这样的水对提高身体机能毫无用处，因为只有通过肺部才能将氧气吸入血液，从而被肌肉吸收。
The densities of the terrestrial planets average about 5 times the density of water, whereas the Jovian planets have densities that average only 1.5 times the density of water.
类地行星的密度的平均值大约是水的密度的五倍，而类木行星的密度平均值只有水的密度的1.5倍。
We all know that though 75% of the earth is covered with water, only 3% of it is fresh water.
我们都知道虽然地球75%都被水覆盖，但是其中只有3%是淡水。
While 75% of our planet is covered with water, only about 2% is fresh water that comes from rivers, lakes, ice and snow.
虽然地球的75%被水覆盖，但只有大约2%是来自河流、湖泊、冰雪的淡水。
Saturn has a density of only 0.7 that of water, which means that Saturn would float in water.
土星的密度只有水的0.7倍，也就是说土星可以浮在水上。
It uses only ten percent of the water that regular hand-washing does.
它使用的水量仅仅是常规洗手的10%。
It was five minutes later that he chose to pour the only water into the pump and began to draw water.
过了五分钟，他选择把仅剩的水倒进水泵里开始抽水。
He not only fought for his own life, but also saved his father's. On that day, Joe and his father Paul were out on their kayak off the coast of Anglesey. Suddenly they noticed that the kayak was starting to fill with water.
他不仅为自己的生命而战，还拯救了他父亲的生命。那天，乔和他的父亲保罗乘着皮艇离开安格尔西岛的海岸。突然，他们发现皮艇进水了。
That is not his only water worry.
不仅仅是他为水而忧虑。
Mars is the only other planet that once had water on its surface – which is why scientists are looking for signs of life there.
除地球以外，火星是唯一的另一个存在表层水的行星。为此，科学家正在那里寻找生命的迹象。
Only baseline data, they said, could show without a doubt that water was clean before drilling began.
他们声称，一些边缘的基准数据只是毫无疑问地表明开钻之前水是干净的。
Dr Corson's models show, however, that this inefficiency is true only if demand for water and the nutrients it contains is constant.
然而，科森博士的模型表明这种低效只有在对水和包含营养素的需求恒定的情况下才能发生。
Once you've formed that habit, focus on drinking only water.
一旦你养成了那个习惯，接下来养成只喝水的习惯。
However, the Commons Administration Committee controversially decided last year that it would offer only bottled water in meetings.
然而去年下院管理委员会有争议地决定在会议上只供应瓶装水。
Smart systems that deliver only the power needed or recycle sewage for water and energy.
更加智能的电力系统、更加有效的污水回收和水供给系统，以及能源设施。
Seagrasses are the only flowering plants that can live entirely in water.
海草是开花植物中唯一能生长在水中的。
So, in that case, the only explanation is that there is something it here that actually is sucking up water or producing more water.
在这种情况下，唯一的解释就是，这里有一些产生，或吸收水的某些东西。
An environmentally-friendly washing machine that USES only one cup of water to clean clothes will be on sale in Britain next year, according to the Daily Telegraph.
据《每日电讯报》报道，一款只需一杯水即可洗净衣物的环保洗衣机预计明年在英国上市。
The water is distilled and is totally freed from any substances with the help of a special mesh-work that filters only water molecules.
将水蒸馏去除杂质的时候会用到一种只过滤水分子的特制网状设备。
Drink only water that has been boiled or disinfected with chlorine, iodine or other suitable products.
只饮用煮沸或经氯、碘或其它适当产品消毒的水。
That essentially means that the only way to replace the water that people take from the Dead Sea would be to manually put water back in.
这正说明了补充人类从死海中取走的水的唯一办法是人为的补充水源。
Another version: hundreds of millions years ago here was a sea and an active underwater volcano that could produce not only steam but water-insoluble minerals as well.
另一种说法是：在成千上万年以前，这里是一片海洋，海底的火山活动频繁，这不仅可以产生蒸汽而且还有非水溶性矿物质等。
But a new forecast by the World Bank suggests that, if it is lucky, Afghanistan can avoid disaster, even if that means only treading water for the next decade.
但是世界银行的最新预测显示，如果幸运的话，阿富汗客逃过这一劫，尽管那意味着在接下来的十年仅仅是踩水。
They have come up with two sorts, one for heavily polluted water and one for water that is only lightly polluted.
他们已经发现了两种光活性催化剂，一种用于净化严重污染的水，一种用于净化轻度污染的水。
Private insurance will cover some of that, but many homeowners are finding that they were covered only against damage by wind, not water.
私人保险将弥补一部分损失，但是许多家庭发现他们的保险只负责由风造成的损失，水造成的不管。
The plan could lessen the reliance on the mammoth pumps that not only remove storm water but also lower the natural water table of the area.
设计还可减轻该地区对众多庞大水泵的依赖，因水泵不仅可以抽掉暴风雨水，却也降低了本地区的地下水位。
Climate change is only one of many factors that will determine future patterns of water availability and use.
气候变化仅仅是关乎未来水资源可用量和水资源利用格局的众多因素之一。
Even though countless human pursuits require water, it is only when we experience a water shortage or pay a water bill that we think much about this indispensable fluid.
尽管人类从事的无数活动都需要水，但只有在经历了缺水或需要付水费时我们才会多想想这不可或缺的液体。
The wicker husband didn't eat, and never complained that his dinner was late. He only drank water, the muddier the better.
柳条丈夫不用吃饭，他只喝水，而且越泥泞越好，他从来不抱怨自己喝的水迟送过去。
They find several critters that can survive only in clean water, and conclude that the pond is in good shape.
他们找到了一些只有在净水中才能存活的生物，因此确定这个池塘状态还不错。
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