单词：fluoridization
- fluoridisation氟化物处理
- fluoridation加氟作用
单词：fluoridization 相关文章
FAITH LAPIDUS: Welcome to THIS IS AMERICA in VOA Special English. Im Faith Lapidus. This week on our program we hear from some Americans about Christmas past, present and future. (MUSIC) FAITH LAPIDUS: Jeffrey Davis remembers Christmas two years ago
2010年VOA慢速英语(十二)月
In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produc
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At the Cheyenne Mountain Zoo, an infant gorilla named Wumundi gets some tender loving care from a dedicated keeper and lots of attention from curious visitors. He is on with a keeper all the time 24 hours a day. Zoo spokesman Sean Anglum explains tha
自然百科2008年
The flu epidemic intensified a few week ago, but it continued to worsen with widespread outbreaks being reported in every state except Florida. NBC's Robert Bazell reports. And there's new information tonight about this year's flu epidemic and why i
万花筒2008年
Good evening, my fellow Americans. Tonight I want to talk to you on a subject of deep concern to all Americans and to many people in all parts of the world, the war in Vietnam. I believe that one of the reasons for the deep division about Vietnam is
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Maria Montessori lived between 1870 and 1952. She was an Italian educator who has left her mark on education today. Her Montessori method of education is widely used all round the world. Many educationalists say it is the best system for child educat
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在TED U 2009的这个简短的演讲中，Jonathan Drori鼓励我们保护生物多样性 -- 从一颗颗种子做起。他提醒我们要保护人类赖以生存的植物，同时他也给大家描述了千年种子库这样一个美好的远景，在
TED公开课:生态谜云
Broadcast: April 18, 2003 By Nancy Steinbach and Shelley Gollust This is Doug Johnson. On our program today, we play some doo-wop music... answer a listener's question about places in the United State
VOA2003（上）-社会广角
By Larry James Moscow 23 April 2007 Former Russian President Boris Yeltsin, who had been in declining health for several years, has died at the age of 76. Mr. Yeltsin served as Russia's president from 1990 until his surprise resignation on December 3
2007年VOA标准英语（四月）
By Lisa McAdams Moscow 23 April 2007 Russian President Boris Yeltsin waves as he arrives at Helsinki airport (File photo - 20 Mar 1997) Russia's first freely elected president, Boris Yeltsin, has died of heart failure at the age of 76. VOA's Lisa Mca
2007年VOA标准英语（四月）
By Nancy-Amelia Collins Jakarta 28 February 2007 The Southeast Asia group Jemaah Islamiyah (JI), which has been blamed for a series of bombings over the past several years, has splintered into factions and may be heading in new directions. VOA's Nan
2007年VOA标准英语（二月）
The sole surviving gunman suspected of participating last year's terrorist attack in Mumbai has been having difficulty keeping a lawyer. His latest court-appointed counsel had threatened to quit after angry demonstrators surrounded her home. But the
VOA标准英语2009年(四月)
By Marianne Kearney Jakarta 05 May 2006 Indonesian police say they are closing in on Southeast Asia's most wanted terrorist, Noordin Mohammed Top, but a report released Friday says that the militant n
2006年VOA标准英语（五月）
By Ron Corben Bangkok 13 July 2006 Five Southeast Asia nations are stepping up cooperation to fight bird flu. Under their agreement, Thailand and Vietnam will share their expertise in containing flu outbreaks through training programs and mobile lab
2006年VOA标准英语（七月）
By Peter Fedynsky Washington, DC 04 January 2007 watch New Congress report The new, 110th session of the U.S. Congress opens today with Democrats enjoying majority status in both houses for the first time in 12 years. But whether they can translate
2007年VOA标准英语（一月）
By Anjana Pasricha New Delhi 24 February 2008 A nascent floriculture industry in India is cashing in on growing demand for roses overseas. Anjana Pasricha has a report from New Delhi. It was just over a decade ago that a handful of entrepreneurs bega
VOA常速英语2008年（二月）
By Jessica Berman Washington 14 September 2007 Scientists have known for some time that most of the stuff in the Universe is so-called dark matter, material that cannot be seen directly because it does not interact with light. That makes it very diff
2007年VOA标准英语（九月）
By Steve Herman Tokyo 07 December 2006 Top-level international health officials say recent outbreaks of bird flu in South Korea emphasize the need for greater preparedness to deal with a potential human influenza pandemic. As Steve Herman reports fr
2006年VOA标准英语（十二月）
As an ass was quietly dining on thistles，he beheld a shepherd seated beneath a tree，awakening sweet echoes on his flute，and charming the ears of all within hearing，excepting our discontented lop-eared brute，who thus soliloquized：The world
趣味英语
WADA confirm USADA's action on Armstrong approriate BEIJING, Oct. 12 (Xinhua) -- World Anti-Doping Agency has again thrown its support behind USADA after a lengthy report with evidence to prove Lance Armstrong a doper. U.S. Anti-Doping Agency issued
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