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One of the newest sources of alternative energy is also one of the oldest - water power. The 19th century water wheel, though, bears no resemblance to the 21st century contraptions powered by ocean waves. The wave energy sector has been slow to coale
VOA标准英语2010年(十一)月
不怕伤鸟：无扇叶涡轮风力发电机 Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of wind generator developed in Spain offers a crea
VOA双语新闻 2015年6月
Relentless waves of rain, some serious and dangerous flooding and more than three quarters of a million people without power. That is the impact of the storm named Isaac had along the U.S. Gulf Coast. This is what it looked like. These are images of
CNN2012年(九)月
Although the cyclone was category 4 the second highest level gusts of wind were 270km an hour at times. Both the wind and the rain caused damage. Many houses in Fiji are not strong and can easily be destroyed in a storm. Some houses blew away in the
新西兰英语
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
By Mike O'Sullivan Los Angeles 01 March 2006 Windmills in California Windmills are sprouting across the United States, as Americans search for non-polluting alternative energy sources. The West Coast
2006年VOA标准英语（三月）