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灵通少儿英语第三册
Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t
2015年VOA慢速英语(七)月
The United States is warning Honduras that there will be a cascade of negative consequences for the Central American state if the coup that ousted elected President Manuel Zelaya on Sunday is not reversed. The Obama administration is backing mediati
VOA标准英语2009年(七月)
Bird-friendly Bladeless Wind Turbine Mimics Nature Energy created by conventional three-blade wind turbines is cheap, sustainable and pollution-free. But according to current estimates, the devices' fast-moving blades kill up to 300,000 birds annuall
VOA标准英语2015年(十一月)
ROBERT SIEGEL, HOST: Ridley Scott's science fiction film Blade Runner was a modest hit in theaters in 1982 and a massive one later on video. Scott's punk noir dystopia initially got mixed reviews, but the director kept re-cutting his film. And by 200
2017年NPR美国国家公共电台10月
Researchers have stumbled across what may turn out to be a miracle（奇迹） treatment for hair loss in humans. The scientists were investigating how stress affects the digestive system when they made the discovery. The team at the University of Ca
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