Earth and Sky:Narrowing Uncertainties 新发现

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NPR 2010-04-20

Transportation authorities in Europe are opening up more airspace to commercial airline flights despite some ongoing concern about the cloud of volcanic ash that has been lingering over the continent for days. The flights will be restricted to so-cal

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HealthReport-GutBacteria:WeAreWhatWeEat This is the VOA Special English Health Report. The human digestive system is full of bacteria -- mostly good bacteria. These organisms help break down food so the body can use the nutrients. Scientists are expl

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3. Narrowing your criteria, for example, may work against you:Every time you answer a question you eliminate a possibility,says one expert. 【分析】句子主干为Narrowing your criteria ... may work against you。for example为插入语；冒号后

VOA慢速英语20060116a

DEVELOPMENT REPORT - Studies Say New Rotavirus Vaccines Are Safe and EffectiveBy Jill Moss Broadcast: Monday, January 16, 2006 I'm Steve Ember with the VOA Special English Development Report. Studies

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At the same time, methanogens can use hydrogen and carbon dioxide produced by other bacteria to generate methane, 同时，产甲烷菌可以使用其他细菌产出的氢和二氧化碳以生成甲烷， which can reduce the total volume of gas by u

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DEVELOPMENT REPORT - How Do Vaccines Reach the Developing World?By Jill Moss Broadcast: Monday, March 06, 2006 I'm Steve Ember with the VOA Special English Development Report. Guatamalan baby infected

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Chronic pain can be a debilitating condition. It can consume a person, leaving him or her incapacitated and unable to perform basic daily tasks. Prescriptions for pain medication have climbed 300 percent in the past decade. This has led to increased

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