标签：methane 相关文章
South Africa Uses Biogas to Turn Waste into Power 南非利用排泄物转换成沼气燃料 JOHANNESBURG Like many countries, South Africa is struggling to meet its energy needs. But instead of developing new technologies, the nation is trying a dif
VOA常速英语2013年(十月)
AZUZ: According to the United Nations, food waste is defined as food that's initial safe for people to eat, but it doesn't get eaten because it's left to spoil or it's thrown out. The U.S. government estimates that food waste in America could be as h
CNN美国有线新闻2016年10月
AS IT IS 2014-05-08 Climate Change Destroys Coral Reefs 气候改变毁坏珊瑚礁 Hello, my friends, and welcome back as we work together to improve your American English. Im Jim Tedder in Washington. Today we will learn more about our changing cli
2014年VOA慢速英语(五)月
By Stephanie Ho Washington 31 May 2007 As long as there are people on the planet, there will be garbage. The rubbish often piles up in landfills that produce a harmful greenhouse gas called methane. VOA's Stephanie Ho reports solid waste managers hav
2007年VOA标准英语（五月）
Georgians are reacting with a mixture of concern and fury at the Russia's decision to recognize the independence of two separatist territories within Georgia. VOA's Peter Heinlein in Tbilisi reports senior Georgian officials are urging the West to v
VOA标准英语2008年（八月）
Australia has promised to introduce the most comprehensive carbon trading program outside Europe in 2010. The government in Canberra plans to cut greenhouse gas emissions by at least five percent by 2020, but it could make bigger reductions if other
VOA标准英语2008年(十二月)
By Mil Arcega Washington, DC 06 September 2006 watch report Green Business Many companies are learning they can be both pro-business and pro-environment without hurting the bottom line. In fact, for some, it's been quite profitable. ----- Being envi
2006年VOA标准英语（九月）
By Stephanie Ho Washington 03 January 2006 Authorities in the U.S. state of West Virginia are scrambling to rescue 13 coal miners who have been trapped 80 meters underground, after an explosion Monday
2006年VOA标准英语（一月）
SCOTT SIMON, HOST: We turn now to Brazil and its modern capital Brasilia. That city was conceived and planned as a kind of utopia, yet its mastermind, the world-renowned architect Oscar Niemeyer, and his fellow planners forgot something critical, whi
2018年NPR美国国家公共电台1月
DAVID GREENE, HOST: This seems big. Scientists say for the first time they have clear evidence that the chemical building blocks of life exist on Mars. So is this the moment we can say there is life on the red planet? Well, NPR's Joe Palca says not y
2018年NPR美国国家公共电台6月
Heres the surprise entry into search for life, this little moon that youd expect to be pretty dead and dull, and coming out of the South Pole of it is a jet of water ice, all the things you need for life are there. Theres an energy source, theres a w
自然百科2012年
Breathing from a so-dubbed scuba unit and now fitted in a cross between a super ski suit and a haz-mat coverall, future Titannauts could explore with confidence. You just need that thermal protection and oxygen, and then you can play on the surface a
自然百科2012年
My name is J.D. Nelson and Ive been a sergeant for Alameda county sheriffs bomb squad for 12 years, as well as doing some crazy things for Mythbusters. I spent most of my time dealing with real life explosive situations. If there is a suspicious pack
探索与发现2013年
By Kane Farabaugh New York City 19 March 2007 watch Richard Branson report Richard Branson sits on the top-ten list of the United Kingdom's richest citizens, with an estimated wealth of roughly eight billion dollars. As the company he founded -- Vir
2007年VOA标准英语（三月）
By Chad Bouchard Bali 06 December 2007 More than 200 of the world's leading climate scientists signed a petition calling for negotiators in Bali's United Nations Climate Change Conference to set aggressive targets for reducing greenhouse gas emission
VOA常速英语2007年（十二月）
By Greg Flakus Fort Collins, Colorado 10 July 2007 This past weekend concerts took place around the world to focus attention on the problem of global warming, which former U.S. Vice President Al Gore says is the greatest single threat facing humankin
2007年VOA标准英语（七月）
By Cathy Majtenyi Nairobi, Kenya 06 December 2007 Kenya's capital, Nairobi, is home to one of Africa's largest dumpsites. A recent United Nations study found that nearly half of the children surveyed who live near the dumpsite suffer from serious med
VOA常速英语2007年（十二月）
重点词汇(填空) mystery novel,float,corpse, initially,putrefaction,digestive tips: 怎样阅读才是有质量的阅读了？ 边看边填空吧，重点词汇可是小编为大家认真筛选的,阅读完后，点击【查看答案】和 【查看
英语听力文摘 English Digest
Terrestrial Planet Finder 瑞士科学家米歇尔梅耶带领欧洲科学家小组宣布发现了一颗新的可能适宜人类居住的星球，现在，他又制定了更大的目标：寻找地外生命的迹象。该发现小组的成员斯蒂凡尤
英语听力文摘 English Digest
A Fresh Breath of Methane 很早很早以前地球有很微量的氧气，而且地表状况十分恶劣。大气主要是N2和Co2，后来通过复杂的变化，地球开始出现了厌氧型生物。在生命的作用下，地球的氧气开始不断
英语听力文摘 English Digest