water是什么意思？

Most roads, bridges, transit, water systems, the electric grid, and communications networks were installed 50 to 100 years ago, and they are largely taken for granted until they fail.

What about supply? 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.

The result is falling water tables ( ' , 地下水位) in countries with half the world's people, including the three big grain producers—China, India and the U.S.

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

Of all those trends, however, the spread of water shortages poses the most immediate threat.

Millions of irrigation wells in many countries are now pumping water out of underground sources faster than rainfall can refill them.

Millions of irrigation wells have significantly lowered water tables in almost every state.

Increasing water shortages prove to be the biggest obstacle to boosting the world's grain production.

But water shortages are even more worrying in India.

As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.

New York State plans to shut  off the thundering waters of NiagaraFalls again.

The privacy issue has already landed Facebook in hot water in Washington.

businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure (基础设施) and jobs.

Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up.

Donna helped the people of the village to organize an irrigation project, and she also advised them on planting corps that didn't require much water.

1 billion worldwide who live with unsafe drinking water.

A nine-year-old central California boy braved strong currents and cold water to swim from San Francisco to Alcatraz Island and back.

About a million bottles are bought every minute, not only by thirsty tourists but also by many of the 2.1 billion worldwide who live with unsafe drinking water.

As the water is pumped out, the vacant space left is compacted by the weight of the earth above.

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

However, you can make your taste buds active again by drinking water.

Initiatives also include efforts to reduce its environmental impact, water consumption and materials used in packaging by 2025.

It is profitable to drill to depths more than 1,000 feet for oil and gas extraction, but only recently in California has it become profitable to pump water from this depth.

It's hot so you grab a bottle of water from a local vendor.

Mail that was already processed in New Orleans facilities was moved to an upper floor so it would be protected from water damage.

Marine life may be affected too: El niños can reduce the rising of the cold, nutrient-rich water that supports large fish 35 populations, and the unusually warm ocean temperatures can destroy coral.

millions of irrigation wells in many countries are now pumping water out of underground sources faster than rainfall can refill them.

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

New research has found deep water reserves under the state which could help solve their drought crisis.

Regardless, the World Health Organisation has launched a review into the potential health risks of drinking water from plastic bottles.

That’s the conclusion of a recently released study, which analysed 259 bottles from 11 brands sold in nine countries, revealing an average of 325 plastic particles per litre of water.

The biggest concern of pumping out water from this deep is the gradual settling down of the land surface.

The bottle is sealed, and the label says "pure water"?

The company employs its trucks and planes to deliver food, medicine, and water.

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.

These studies showed that their water did contain microplastics, but far less than the Orb study suggested.

To help prevent headaches, drink plenty of water, and avoid alcohol and coffee.

Turkish authorities have just sunk something a little different than a ship, and it wouldn't normally ever touch water, an airbus A0.

We purify the water we drink with a water filter designed for the astronauts' use in space.

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.

When given the choice of either eating food or drinking water, the mice went for the food, the researchers found.

When travelling overseas, do you buy water in plastic bottles or take your chances with tap water?

For example, the United Nations Children's Fund estimates that some 11 million children in Africa face hunger, disease, and water shortages as a result of the strongest El Ni o ( ' , 厄尔尼诺) weather phenomenon in decades.

When this water is used for agricultural irrigation, farmers risk absorbing disease-causing bacteria, as do consumers who eat the produce raw and unwashed.

Unlike developed cities, however, these areas lack advanced water-treatment facilities, and rivers effectively become sewers ( ' , 下水道).

Those dangers can be addressed with farmer and consumer education, he said, while the free water and nutrients from human waste can help urban farmers in developing countries to escape poverty.

They also, however, use far more natural resources—fuel, water ( ' , all those baths and golf courses) and building materials.

Overly strict standards often fail, James Bartram, a WHO water-health expert, said.

No wonder parents worry their own kids might spin out of control once they hit the turbulent waters of adolescence.

Most of these operations draw irrigation water from local rivers or lakes.

More than 80% of those cases can be attributed to contact with contaminated water and a lack of proper sanitation.

In some cases, water is so scarce that farmers break open sewage pipes transporting waste to local rivers.

In most cases, the human waste is used on grain crops, which are eventually cooked, minimizing the risk of transmitting water-borne diseases.

Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage ( ' , 下 水道污水) to irrigate and fertilize nearly 49 million acres of cropland, according to a new report—and it may not be a bad thing.

But there are also many examples of growing wealth by trashing the environment, in rich and poor parts of the world alike, whether through unregulated mineral extraction, drastic water use for agriculture, slash-and-burn farming, or fossil-fuel-guzzling ( ' , 大量消耗) transport.

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

it is unfair to those climate-vulnerable nationsit aims to keep temperature rise below 2 ℃ onlyit is beneficial to only fewer than 4% of countriesit burdens developed countries with the sole responsibilityThey needn't worry about the food and water they consume.

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.

It is estimated that Antarctica boasts of the richest reserves of fresh water on earth.

Developed nations such as Australia, the United States, Canada, and European countries are essentially climate free-riders: causing the majority of the problems through high greenhouse gas emissions, while incurring few of the costs such as climate change's impact on food and water.

Companies are pushing it hard but make it almost overwhelming even to dip a toe in the water for the average consumer, because there are so many compatibility issues to think about.

Born in fire and fury, Devils Tower was then shaped by the slow, gentle work of wind and water.

At worst, they’ll think the messages about soda are the same as the messages about water.

By sanctioning this watered-down version of college, universities are catering to the social and educational needs of wealthy students at the expense of others who won't enjoy the financial backing or social connections of richer students once they graduate.

Arum and Roksa placed the blame for students' lack of learning on a watered-down college curriculum and lowered undergraduate work standards.

"There is a large potential for waste water agriculture to both help and hurt great numbers of urban consumers," said liqa Raschid-Sally, who led the study.

A selected person pours water or juice from the unity cup into a bowl.

Although the planned operation will be located more than miles away, drawing the soda ash in through pipelines, conservationists worry it could still upset the natural water cycle and breeding grounds.

As a result, storms that form over the Pacific deliver heavier water to California than to Utah.

As the ocean warms, a body of water called the Antarctic Polar Front - an upward movement of nutrient-rich sea that supports a huge abundance of marine life - is being pushed further south. This means that king penguins, which feed on fish and krill in th

As the sea creeps into these fresh—water marshes, however, rising salinity (盐分) is hampering rice production.

At the base of a mountain in Tanzania Gregory rift, Lake Natron burns bright red, surrounded by the remains of animals that were unfortunate enough to fall into the salty water.

Bats, swallows and more are chemically preserved in the pose in which they perished, sealed in the deposits of sodium carbonate in the water.

But there are also many examples of growing wealth by trashing the environment, in rich and poor parts of the world alike, whether through unregulated mineral extraction, drastic water use for agriculture, slash-and-burn farming, or fossil-fuel-guzzling t

Cerling's team collected tap water samples from 600 cities and constructed a map of the regional differences.

Companies are pushing it hard but make it almost overwhelming even to dip a toe in the water for the average consumer, because there are so many compatibility issues to think about.

Developed nations such as Australia, the United States, Canada, and European countries are essentially climate "free-riders": causing the majority of the problems through high greenhouse gas emissions, while incurring few of the costs such as climate chan

During months without water under a harsh sun, they wither, shrink and contract until they look like a pile of dead gray leaves.

Energy to drive a steam locomotive can be stored in other materials besides water.

Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage to irrigate and fertilize nearly 49 million acres of cropland, according to a new report—and it may not be a bad thing.

Flamingos have evolved very leathery skin on their legs so they can tolerate the salt water, says David Harper, a professor at the University of Leicester.

For example, the United Nations Children's Fund estimates that some 11 million children in Africa face hunger, disease, and water shortages as a result of the strongest El nio weather phenomenon in decades.

For example, they may have access to drinking water, but not clean safe drinking water.

Grazing herds stimulate microbial activity in the soil, helping to capture water and separate carbon.

I always tell people to make sure they're drinking enough fluids, which for the average person is 60 to 70 ounces a day, which translates into eight 8-ounce glasses of water or liquid per day.

In poor, dry regions, untreated waste water is the only viable irrigation source to keep farmers in business.

In the beginning of the movie I, Robot, a robot has to decide whom to save after two cars plunge into the water— Del Spooner or a child.

It is clear now that it's a matter of time before the entire European coastline disappears under water.

living in slums means they don't have infrastructure to take the garbage away, they don't have secure water supplies to drink.

Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.

Resurrection plants, defined as those capable of recovering from holding less than 0.1 grams of water per gram of dry mass, are different.

So far this year, water levels have been too high for the flamingos to nest.

Some plants store reserves of water to see them through a drought; others send roots deep down to subsurface water supplies.

That means when a golfer tells himself "Don't hit the ball into the water", his mind sees the image of the ball flying into the water.

That presumably included much more water than the tiny trace we find blowing in the thick air today.

The method relies on measuring how chemical variations in drinking water show up in people's hair.

The more you lose, the more open water is created, the more warming goes on in that open water during the summer, the less ice forms in the winter, the more melt there is the following summer.

The water is so corrosive that it can burn the skin and eyes of unadapted animals.

There is something about water that makes it a good metaphor for life.

These books reflect a trend particularly strong in Britain, where swimming in pools is declining, but more and more folks are opting for open water.

They also, however, use far more natural resources—fuel, water all those baths and golf courses and building materials.

They can recover from months and years without water, depending on the species.

They may be able to handle a drought of some length, and many people use the term "drought tolerant" to describe such plants, but they never actually stop needing to consume water, so Farrant prefers to call them drought resistant.

Three-quarters of the world's flamingos fly over from other salt lakes in the Rift Valley and nest on salt-crystal islands that appear when the water is at a specific level一too high and the birds can't build their nests, too low and predators can move bri

When the water hits the right level, the baby birds are kept safe from predators by a corrosive ditch.

While it may be impossible to prevent kids from drinking tap water that may contain trace amounts of chemicals, keeping kids away from lawns recently sprayed with chemicals and freshly dry-cleaned clothes can't hurt.