单词：denitrifiers
单词：denitrifiers 相关文章
Scientists at the Massachusetts Institute of Technology (MIT) have created what could be a breakthrough in providing clean, alternative energy. Researchers have invented an artificial leaf that splits water into hydrogen and oxygen and stores the ene
创新英语
Universities Prepare Students for Socially-Conscious Careers The American economy has traditionally been divided into three sectors: government, for-profit businesses and non-profit charities. In more recent years, students of American business have
VOA标准英语2011年(五月)
20 The Historical Significance of American Revolution The ways of history are so intricate and the motivations of human actions so complex that it is always hazardous to attempt to represent events covering a number of years, a multiplicity of person
英语范文背诵20篇
Todays episode concerns a what-you-may-have-been-wondering-about topic. That sure was a mouthful, and it illustrates the problem of stacked modifiers, which occurs when you string together too many words to describe a noun at the end of the mouthful.
英语语法 Grammar Girl
Artificial Muscle Brings Back Blink A study in the Archives of Facial Plastic Surgery reports the development of an artificial muscle system that could restore the ability to blink to stroke and injury patients. Cynthia Graber reports Most of us blin
60秒科学
Grammar Girl here. Today guest-writer Bonnie Trenga is going to help us take a break from serious grammar and instead delve into the world of comedysome intentional, some not. Groucho Marx said it best: One morning I shot an elephant in my pajamas. H
英语语法 Grammar Girl
You and I moving in the dark Bodies close but souls apart Shadowed smiles and secrets unrevealed I need to know the way you feel Chorus : I'll give you everything I am And everything I want to be I'll
100首英语歌
By Nico Colombant Dakar 19 February 2007 Union leaders in Guinea are welcoming a more relaxed curfew, but are pursuing a crippling strike action. They say they want President Lansana Conte to respect agreements signed in January that have been ignore
2007年VOA标准英语（二月）
By Franz Wild Abidjan 20 April 2006 The Nigerian university staff union says its members' working conditions have dropped below acceptable levels, and the government is interfering in academic affairs
2006年VOA标准英语（四月）
By Melinda Smith Washington, D.C. 29 March 2006 waatch Depression Meds report Depression can affect anyone from time to time, but when it goes from the usual
2006年VOA标准英语（三月）
Australian farmers are urging their political leaders to secure a swift trade accord with South Korea, ahead of free-trade negotiations that are scheduled to start in May. Australian beef producers are worried that their hopes for greater access to
VOA标准英语2009年(三月)
Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani
VOA标准英语2011年(四月)
Former Bosnian Serb leader one of three masterminds accused of designing Bosnia genocide Andre de Nesnera 23 November 2009 Wartime Bosnian Serb leader Radovan Karadzic appears at the International Criminal Tribunal in the Hague to face war crimes ch
VOA标准英语2009年(十一月)
By Al Pessin Honolulu, Hawaii 20 October 2009 Command of U.S. forces in Asia and the Pacific and Indian Oceans passed to a new commander on Monday at a ceremony in Honolulu, Hawaii. Navy Admiral Robert Willard said the U.S. commitment to the region
VOA标准英语2009年(十月)
Grammar Girl here. Today's topic is misplaced modifiers. Of all the writing errors you can make, misplaced modifiers are among the most likely to confuse your readers, but they're also kind of fun because misplaced modifiers can give your sentences s
英语语法 Grammar Girl
By Naomi Schwarz Dakar 02 July 2007 Many heads of state are advocating a moderate, step-by-step approach to continental integration at the African Union summit in Ghana's capital, Accra. The summit, which continues until Tuesday, aims to debate the p
2007年VOA标准英语（七月）
Researchers have developed a method to activate electronic implants in the body and eliminate bacterial infections using a wireless signal。 研究者已经开发了一种运用无线信号激活人体中电子植入物来消除细菌感染的方法。
英语新闻
Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe
英语新闻
U.S. military officials say they have identified the four Marines seen on video urinating on the bodies of dead Afghan Taliban fighters. The Naval Criminal Investigative Service, heading the main inquiry into the video, has also reportedly questioned
英语新闻
Leaders of the Greek and Turkish communities of Cyprus are starting a new series of negotiations aimed at re-unifying the divided island. Cypriot President Demetris Christofias and Turkish Cypriot leader Mehmet-Ali Talat have begun a series of three-
VOA标准英语2010年(一月)