单词：ethylidenedicoumarol
单词：ethylidenedicoumarol 相关文章
AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s
2014年VOA慢速英语(五)月
AS IT IS 2013-07-01 Graduating Early from Medical, Law School Hello, and welcome once again to As It Is, our daily show for people learning everyday American English. Im Christopher Cruise in Washington. Today on the program, some American law school
2013年VOA慢速英语(七)月
Whats in a name? When commentator Taunya English got married, she found it wasnt so easy to adjust to a new one or the new identity that went along with it. Lately, when someone asks my name, I hesitate just for a second. My brain rifles through its
2006年NPR美国国家公共电台
A MARTINEZ, HOST: Northeastern Nigeria now where the Boko Haram terror network has killed 20,000 people, driven millions from their homes and abducted thousands. Adults and children who survived the eight-year insurgency are beginning to tell their t
2017年NPR美国国家公共电台8月
美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related
VOA双语新闻 2014年1月
By Cathy Majtenyi Nairobi 02 March 2006 Hooded police in Kenya have raided the privately owned Standard media group's television offices and newspaper printing presses. The managing editor of the Keny
2006年VOA标准英语（三月）
US Museum Showcases National Medical Collection These conjoined twins are not what you'd come across in a conventional museum. They are one of the exhibits at The National Museum of Health and Medicine near Washington. Its aim is to promote the under
VOA标准英语2012年(八月)
Explorers Hope They Are Close to Solving Amelia Earhart Mystery Earhart was a pioneering American aviator in the early 20th century. The first woman to fly solo across the Atlantic Ocean, she became a national celebrity. In July of 1937, she and navi
VOA标准英语2012年(六月)
The retired former chief of the U.S. central bank, Paul Volcker, told a congressional committee Thursday that to avoid further financial crises there needs to be greater regulation of financial institutions. Paul Volcker testifies before Joint Econo
VOA标准英语2009年(二月)
Experts Say Political Reforms Needed for Afghanistan's Stability U.S. and NATO combat forces are set to leave Afghanistan by 2014. Afghanistan's neighbors and Western countries are pledging their commitment to the country's security and economic stab
VOA标准英语2011年(十一月)
Obama: Palestine-Israel Solution Must Be Based on 1967 Borders President Barack Obama says lasting peace between Israel and the Palestinians must be based on two states, with Israel in its 1967 borders, with conditions.? In a major speech on U.S /Mid
VOA标准英语2011年(五月)
American Muslims Prepare for Ramadan 美国穆斯林准备进入斋月 LOS ANGELES The Islamic holy month of Ramadan begins Thursday, June 18th in Los Angeles, and Muslims around the world are preparing the time of fasting, reflection and communal ga
VOA标准英语2015年(六月)
One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds
白领英语晨读
By Gilbert da Costa Abuja 04 September 2006 Health officials in the northeastern Nigerian state of Borno have confirmed the death of at least 80 people in a cholera outbreak. Nearly 2,000 people have so far being infected. The state government has d
2006年VOA标准英语（九月）
By VOA News 07 March 2007 Umar Yar'adua (December 2006) The presidential candidate of Nigeria's ruling party says he will return soon from Germany, where he was flown Tuesday for medical treatment. In an telephone interview Wednesday with VOA's Hausa
2007年VOA标准英语（三月）
On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上，公司的历史没有提及铅──也没有提
万物简史
By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo
万物简史
Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions
万物简史
By Sarah Simpson Kano 11 April 2007 Lawal Manesara, left, discuss with Ali Usman, centre, and sani Bako, right, all polio victims in a street of Lagos, Nigeria, 4 May 2005 Many polio victims in the northern Nigerian city, Kano, have turned their back
2007年VOA标准英语（四月）
If you were going to a restaurant and wanted a healthier option, 如果你去饭店，你想吃得健康一点， which would you choose, grilled or fried chicken? 你会选择哪种食品呢，烤鸡还是炸鸡？ Now most people would answer grill
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