淡水

岛上缺少淡水。

There is a shortage of fresh water on the island .

盐水比淡水浮力大。

Salt water is more buoyant than fresh water .

盐水比淡水的传导性强得多。

Salt water is much more conductive than fresh water is .

淡水和其他商品短缺。

Fresh water and other commodities are in short supply .

鲈鱼是淡水鱼。

The perch is a freshwater fish .

淡水养鱼大有可为。

There are bright prospects for freshwater fish farming .

淡水在摄氏零度结冰。

Fresh water freezes at 0 ℃ .

中国淡水鱼资源居世界之首，淡水鱼类有七百多种，主要经济鱼类有四五十种。

China has the world 's richest freshwater fish resources , totalling over 700 species , including 40 to 50 species of major cash fish .

盐水冰点温度比淡水冰点温度低。

Salt water freezes at a lower temperature than fresh water .

煤是由淡水植物遗骸形成的。

Coal is formed from the remains of freshwater plants .

船在启航前先加淡水。

A ship waters before sailing .

农业是一个极耗水的产业。农业耗水量占世界淡水资源消耗量的70%。

Agriculture is a water-intensive business , accounting for nearly 70 % of global fresh water consumption .

然而，随着海水侵入淡水湿地，不断增加的盐分正在妨害稻米产量。

As the sea creeps into these freshwater marshes , however , rising salinity is hampering rice production .

一些科学家在研究从南极洲采集冰川的可能性，据估计，南极洲蕴藏着地球上最大的淡水资源。

Some scientists are examining the potential for harvesting icebergs form Antarctica , which is estimated to have the biggest reserves of fresh water on the planet .

在南极洲的其他地方，俄罗斯研究员吹嘘他们钻透数英里坚冰后，发现了像安大略湖大小的淡水储量。

Elsewhere in Antarctica , Russian researchers boast of their recent discovery of a freshwater reserve the size of Lake Ontario after drilling through miles of solid ice .

这些蜗牛原产自南美洲，由全球水产技术公司意外地带入了埃布罗河三角洲，该公司曾为淡水水族馆饲养这些蜗牛，却不慎让它们逃脱了。

Originally from South America , the snails were accidentally introduced into the Ebro Delta by Global Aquatic Technologies , a company that raised the snails for fresh-water aquariums , but failed to prevent their escape .

然而，印度淡水资源短缺更令人担忧。

But water shortages are even more worrying in India .

这其中最大的挑战是农业灌溉，仅此一项便会消耗全球七成的淡水资源。

The biggest challenge here is irrigation , which consumes 70 % the world 's fresh water .

对于地下淡水储存量的最新估计现在上升到了2。7万亿立方米。

New estimates of the water reserves now go up to 2,700 billion cubic meters of freshwater .

虽然从这些深度抽水的成本高昂，但还是比主要处于海岸沿线的州通过对海水进行脱盐以获取淡水的成本低。

Even though pumping from these depths is expensive , it is still cheaper than desalinatingthe ocean water in the largely coastal state .

加利福尼亚州多年来一直面临着干早问题，一些地方甚至需要从数百英里以外的地方抽取淡水到分配系统。

California has been facing a drought for many years now , with certain areas even having to pump freshwater hundreds of miles to their distribution system .

地下井是淡水更为可靠的来源，而加利福尼亚州正期望这些深层地下井可以解决他们严重的淡水短缺问题。

Wells are much more reliable sources of freshwater , and California is hoping that these deep wells may be the answer to their severe water shortage .

当前的三大环境趋势——淡水资源短缺、表层土壤流失和气温不断上升——使得加速扩大粮食供应以跟上需求越来越难。

The three environmental trends —— the shortage of fresh water , the loss of topsoil and the rising temperatures —— are making it increasingly hard to expand the world 's grain supply fast enough to keep up with demand .

他补充说："那是一只非常幸运的狗。她活下来是因为有充足的淡水供应。"。

" It was a very lucky dog . She survived because of a plentiful supply of fresh water , " he added .

野生动物园有很多淡水和咸水鳄鱼。

The Wildlife Park has plenty of freshwater and saltwater crocodiles .

梭鱼是一种淡水鱼。

The pike is a kind of freshwater fish .

处理废水是为我们提供淡水的好方法。

Treating waste water is a good way to provide fresh water for us .

如果我们所使用的淡水量超过了大自然的产生量，我们就索取的太多了。

If we remove more fresh water than nature replaces , we have taken too much .

淡水资源被污染后，我们就不能再使用这些水了。

When our sources of fresh water get polluted , we can no longer use this water .

尼罗河的主要支流白尼罗河发源于位于非洲中东部的世界第二大淡水湖维多利亚湖的正上方。

The main branch of the Nile , the White Nile , starts just above Lake Victoria , the world 's second largest fresh-water lake , in east central Africa .