单词：plastic greenhouse
单词：plastic greenhouse 相关文章
On a restricted site in northern Wisconsin, the hissing you hear is helping scientists see the future. Inside towering rings of pipes, aspen, birch, and sugar maples feed on measured diets of greenhouse gases. Our studies were looking at what forest
国家地理2007年
Rich cities around the world are largely responsible for greenhouse gas emissions, says a new study. The study measures emissions based on the use of goods and services, such as food, clothing and electronics, by people living inside cities. It inclu
2018年VOA慢速英语(三)月
By Ted Landphair Washington 09 August 2007 Every day, American consumers are offered a simple choice when they areby a store's cashier: paper or plastic? But as VOA's Ted Landphair explains in today's searching for solutions report, some communities
2007年VOA标准英语（八月）
New Ways of Tracking Greenhouse Gas Emissions Developed With more than 18 million people living, working and driving in Los Angeles, the city often is covered in a hazy layer of smog. Stan Sander, senior research scientist at the U.S. space agency's
VOA标准英语2013年(七月)
Its amazing to think there wasnt any plastic one hundred years ago. Now its everywhere. Almost everything thats made has some plastic in it. Whoever invented it must be really rich. There are all kinds of plastic. Its pretty useful stuff. I once went
纯正英语一分钟
By Nancy-Amelia Collins Bali 10 December 2007 Delegates to the U.N. climate change conference are locked in debate over whether to set tough new limits on greenhouse-gas emission, with the United States leading the fight against firm limits. VOA's Na
VOA常速英语2007年（十二月）