单词：geared-diesel machinery
单词：geared-diesel machinery 相关文章
To better know their carbon footprint, a group of Australian landowners are doing their own calculations on what climate change could mean for them. They're looking at ways to improve yields and efficiency in their respective industries while lowerin
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By Malcolm Brown Washington, D.C. 24 July 2007 The future of coal has become a hot topic in the United States. The debate sets concerns about global warming against the desire to reduce America's dependence on foreign energy sources. With the United
2007年VOA标准英语（七月）
New research finds a link between vehicle emissions and cognitive function in older people. People who live in polluted cities can see the grit and dirt produced from vehicle engines but some of the most damaging emissions are only now starting to be
VOA标准英语2011年(一月)
Plastic waste is swamping Asia's landfills, and some ends up at sea, harming marine life. Now, environmentalists and entrepreneurs are attempting to recycle plastic back to its main component - oil. In the northern Pacific Ocean, scientists say a la
VOA标准英语2009年(七月)
Ohio Lake Erie, the smallest of North Americas five Great Lakes, supplies fresh drinking water to an estimated 11 million people in Ohio, Michigan and southern Ontario province, Canada. Yet sometimes pollution, both from industrial waste and farm-che
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Food can be produced more cheaply today by using improved fertilizers and better machinery. However, some people think that the methods used to increase production may be dangerous for human health and have negative effects on local communities. What
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