单词：light wave train
单词：light wave train 相关文章
Amid the recent economic downturn, demand in the U.S. is rising for small wind turbines to power people's homes. The American Wind Energy Association says sales of such turbines rose 15 percent in 2009. One man in Florida is generating his own power
VOA标准英语2010年(六)月
By Nancy Palus Dakar 28 March 2008 Several northern towns in rebel-held Ivory Coast have run out of gasoline in recent days. In some areas, street vendors are selling black market fuel at up to six times the normal price. Nancy Palus reports from VOA
VOA标准英语2008年（三月）
By Lisa Bryant Paris 27 May 2008 The French government has called for the European Union to suspend certain gas taxes and for OPEC to increase production as part of a series of measures to ease the high cost of oil - which has topped $130 a barrel. L
VOA标准英语2008年（五月）
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)
AUDIE CORNISH, HOST: Think about some of the things that spew nasty contaminants into the air - automobiles, power plants. How about leaf blowers? Those annoyingly loud, gas-powered, backpack-like machines are about to pass cars as the worst air poll
2017年NPR美国国家公共电台3月
SCOTT SIMON, HOST: The Democrats' proposed Green New Deal calls for America to eliminate greenhouse gas emissions from U.S. transportation, an ambitious goal that would require - among many other things - phasing out cars that run on gasoline. That m
2019年NPR美国国家公共电台2月