Older equipment powered by fossil fuels should be inspected every year to make sure it continues to be safe.
VOA: special.2010.02.02
So, taming of steel. The beginning of generating power by burning fossil fuels.
人们能够驾驭钢铁,开始通过燃烧化石燃料发电。
That's for a different lecture So, anyway, thermodynamics dates from the same period as getting fossil fuels out of the ground. It's universal.
这是另一堂课的内容,不管怎么说,热力学与开采化石燃料,起源于同一时期,它是普适的。
The two scientists have concluded from fossil records that giant meat-eating dinosaurs like the Tyrannosaurus rex mainly ate young dinosaurs.
VOA: special.2009.09.01
Experts agree that the leading cause of carbon monoxide poisoning is damaged equipment that burns these fossil fuels.
VOA: special.2010.02.02
Paul Sereno said the fossil will be returned to China and put in a museum when the scientists have finished their studies.
VOA: special.2009.10.13
Natural gas is considered the cleanest of the fossil fuels, the fuels created by plant and animal remains over millions of years.
VOA: special.2009.10.23
He found fossil remains of the same kind of an early plant in areas of Africa, South America,India, Australia and even Antarctica.
VOA: special.2010.01.12
The museum also has many fossil remains of the huge cats that once lived in the area.
VOA: special.2010.04.07
Visitors can see the ancient fossil bones of creatures like the imperial mammoth and the American mastodon.
VOA: special.2010.04.07
There,Darwin noted that levels of rock extending high above the sea contained the fossil remains of shells.
VOA: special.2009.02.25
Fossil records of the stomach contents of the larger dinosaurs suggest they swallowed these young dinosaurs whole.
VOA: special.2009.09.01
He says knowing how to do this may be especially valuable if fossil fuel should become unavailable.
VOA: special.2009.04.14
It is exciting to stand only a few meters away and watch scientists clean the asphalt off a fossil that is thousands of years old.
VOA: special.2010.04.07
The gas is mainly methane. It produces half the carbon dioxide of other fossil fuels.
VOA: special.2009.10.23
But he is hard at work. He and his team currently are trying to make algae that can change carbon dioxide back into fossil fuel.
VOA: special.2010.07.20
Scientists have recovered more than one million fossil bones from the La Brea Tar Pits.
VOA: special.2010.04.07
The area is considered one of the richest areas of fossil bones in the world.
VOA: special.2010.04.07
Students grow organic food and use as little fossil fuels and chemicals as possible.
VOA: special.2009.04.14
He also collected the fossil remains of animals that had disappeared from the Earth.
VOA: special.2009.02.25
The museum also has thousands of fossil remains of an ancient kind of wolf.
VOA: special.2010.04.07
Doctor Kriegstein named the fossil to honor his parents and donated it to science.
VOA: special.2009.10.13
But Mister Rauhut says fossil records show that this is not the case.
VOA: special.2009.09.01
Also in the Mediterranean, a team of census-takers discovered a living fossil.
VOA: special.2010.11.09
The fossil was removed from China under mysterious conditions.
VOA: special.2009.10.13
But it also leads to a fossil fuel.
VOA: special.2009.10.23
"We're looking to get off fossil fuel generation, whatever it might be, and we need to bring these newer technologies in.
VOA: standard.2010.03.23
Senator Lamar Alexander said the country should build 100 nuclear power plants, to help break its reliance on fossil fuels.
VOA: standard.2009.04.25
The disaster comes as Obama administration attempts to chart a course toward U.S.energy independence and less reliance on fossil fuels.
VOA: standard.2010.05.02
Does measures seem to low emissions of greenhouse gases by raising the cost of gasoline, coal,natural gas and other fossil fuels.
VOA: standard.2009.12.12
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