source是什么意思？

It is their major source of protein in winter.

In spring, chickens start laying again, bringing a welcome source of protein at winter's end.

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

Failing states are of international concern because they are a source of terrorists, drugs, weapons and refugees ( ' , 难民), threatening political stability everywhere.

To make that happen, you have to help the child find pleasure in learning—to see school as source of joy.

Shouldn't preparing—and consuming—food be a source of comfort, pride, health, well-being, relaxation, sociability? Something that connects us to other humans? Why would we want to outsource ( ' , 外包 ) this basic task, especially when outsourcing it is so harmful? When I talk about cooking, I'm not talking about creating elaborate dinner parties or three-day science projects.

It will not be difficult to make learning a source of joy if educators change their way of thinking.

In some cases, schools should help children find new, more grown-up ways of doing the same things that are constant sources of joy: making art, making friends, making decisions.

They weren't using it as a source of communication because they couldn't read or write in it.

Publishers give us all of the source media, artwork, videos," he says, "We help them think through how to actually build something for this platform

For example, one who doesn't know the rules a about plagiarism (剽窃) may accidentally use words or ideas without giving proper credit or one who fails to keep careful research notes may unintentionally fail to quote and cite sources as required.

But experts say that even when combined , alternative energy sources will likely meet only about 30% of the world's energy needs by

For example, even with significantinvestments, such as the $93 million for wind energy development included in the American Recovery and Reinvestment Act, important alternative energy sources such as wind and bio-fuels comprise only about 1% of the market today

However, the British don't have a history of exporting their foodstuffs, which makes it difficult for restaurants in Hong Kong to source authentic ingredients.

Plus, importantly, the power source is rechargeable, so this does not involve using any valuable resources.

She is not a reliable source of information

The creative process has always been accepted as the source of all important work in the arts, but we should not think the creativity plays a role only in the arts.

It is the source of all artistic work

Shouldn't preparing—and consuming—food be a source of comfort, pride, health, well-being, relaxation, sociability?

So if something happens to their food source, they have a way of not starving to death until they find more algae to eat.

To make that happen, you have to help the child find pleasure in learning — to see school as source of joy.

The current low fossil fuel price environment will thus certainly delay the energy transition from fossil fuel to clean energy sources.

Notwithstanding important recent progress in developing renewable fuel sources, low fossil fuel prices could discourage further innovation in, and adoption of, cleaner energy technologies.

Fossil fuels remain the major source of primary energy consumption in today's world.

For example, the United Arab Emirates has endorsed an ambitious target to draw 24% of its primary energy consumption from renewable sources by 2021.

Coal and natural gas are mainly used for electricity generation, whereas oil is used mostly to power transportation, yet the prices of all these energy sources are linked.

By raising relative demand for clean energy sources, a carbon price would also help align the market return to clean-energy innovation with its social return, spurring the refinement of existing technologies and the development of new ones.

A tax on upstream carbon sources is one easy way to put a price on carbon emissions, although some countries may wish to use other methods, such as emissions trading schemes.

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

From other sources, we also know teenage crime, drug abuse and premarital sex are in general decline.

The 83% of American employees who are stressed about their jobs – up from 73% just a year before – say that poor compensation and an unreasonable workload are their number-one sources of stress.

When we can't actually remove the source of our fear, we tend to adapt psychologically by adopting a range of defence mechanisms, says Tom Crompton, change strategist for the environmental organisation World Wide Fund for Nature.

To change the light source is costly because you have to change the whole fixture.

There are some very commendable characteristics of the CFL [compact fluorescent ( ' , 荧光的 ) light bulb], yet the selection of any light source remains inseparable from the luminaire ( ' , 照明装置 ) that houses it, along with the space in which both arc installed, and lighting requirements that need to be satisfied.

The whole fixture must be replaced—light source and luminaire—and this is never an inexpensive proposition.

The problem with lighting, if it arises, often doesn't lie in light sources but in their applications.

As lighting expert Howard Brandston points out, Generally, there are no bad light sources, only bad applications.

If the time for heel-dragging has been shortened, the true source of the anxiety and panic remains what it has always been.

However, water used in irrigation is often sourced unsustainably.

With production anticipated to increase by 25% between now and 2030, sustainable energy sourcing will become an increasingly major issue.

Starting in the 1980s, skill in finance grew in importance, and, as depicted in the news media and the movies, became a more appealing source of income.

billion metric tons of carbon into the atmosphere each year - making forests the leading source of greenhouse gases

The author argues that the rising carbon levels in rain forests may turn them into a major source of greenhouse gases.

turn them into a major source of greenhouse gases

By 1973, domestic US sources of oil were peaking, and the nation was importing more of its oil, depending on a constant flow from abroad to keep cars on the road and machines running.

These included developing additional domestic sources (such as those on Alaska's North Slope), resuming extraction at sites that had been shut down because of cost inefficiency, capping the price that domestic producers could charge for oil, and beginning to import oil from a greater diversity of nations

Methane has become the chief source of greenhouse gas.

They believe such a diet which includes no products from animal sources can be deficient in many of the necessary vitamins and minerals our bodies need.

"When we can't actually remove the source of our fear, we tend to adapt psychologically by adopting a range of defence mechanisms," says Tom Crompton, change strategist for the environmental organisation World wide Fund for Nature.

Eat Grub is Britain's first new food company that breaks western food boundaries by introducing edible insects as a new source of food.

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

Pipitone believes that whole foods provide the best source of protein.

Plagued by long delays, perpetual mismanagement, and ever saw ring costs, the airport has become something of a joke among Germans and a source of frustration for local politicians, business leaders and residents alike.

Sainz Breeze insist that such food is no joke and could be a new, sustainable source of protein.

The bird Clark's nutcracker, for example, hides up to 100, 000 seeds per year, up to 30 kilometers away from the seed source, and has a very close symbiotic(共生的) relationship with several pine species, most 32 notably the whitebark pine.

The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce.

The whole fixture must be replaced — light source and luminaire — and this is never an inexpensive proposition.

There are some very commendable characteristics of the CFL (compact fluorescent light bulb), yet the selection of any light source remains inseparable from the luminaire that houses it, along with the space in which both arc installed, and lighting requir