单词：fluorescin
the reduction of fluorescein, and from which the latter may be formed
by oxidation.
单词：fluorescin 相关文章
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
This is the VOA Special English Agriculture Report. A locavore is someone who eats foods produced locally. Locavores usually define local as within one hundred sixty kilometers. This new term grew out of a reaction to the long distances that food no
VOA慢速英语2008年（八）月
Millions More Children to Receive Vaccines More than one million children die each year from severe diarrhea and pneumococcal disease. Today (Tuesday), the GAVI Alliance announced an expanded campaign against the two leading killers of children world
VOA标准英语2011年(九月)
Politics Overtaking Science in Global Warming Debate Polls in recent years show that fewer Americans believe global warming is a threat or that it is driven by human activities. Thats despite consensus among scientists that climate change is not only
VOA标准英语2011年(九月)
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单词解析速记
On a cold, dull, Winter day, I sometimes light a fire after picking the children up from school. We gather around and feel cozy. The lounge where we have the fireplace also has a computer and a Wii console, so there is plenty to do for everyone. Thou
英语博客 A cup of English
Swine flu spread 'not sustained ' 猪流感疫情继续传播 The number of confirmed cases （确诊病例） of swine flu in the UK has risen to 15. 英国猪流感确诊病例上升到 15 人。 The increase, from 13, comes as health chiefs await the results of more than 60
英语新闻
THE HAGUE, June 24 (Xinhua) -- Bird flu was discovered at a poultry farm in the central Dutch province of Flevoland, the Ministry of Agriculture said Friday. It said the virus discovered was a mild variant. The farm's 47,000 chickens were slaughtered
英语新闻
By Mike O'Sullivan Los Angeles 19 September 2006 The Getty Center is one of the leading art institutions in the United States. It is also major center for restoration of damaged art works. The Getty museum has been embroiled in recent controversies
2006年VOA标准英语（九月）
US Scientists Expand Scope of HIV Vaccine Study The worlds largest ongoing HIV vaccine study has been expanded to consider multiple ways a vaccine might boost immune response to the AIDS virus. The U.S. Institute of Allergy and Infectious Diseases (N
VOA标准英语2011年(八月)
MARY LOUISE KELLY, HOST: I let you down. I should have acted faster and more decisively - the words of NPR CEO Jarl in an email to our newsroom. He met with NPR staff this afternoon two days after he asked for the resignation of senior vice president
2017年NPR美国国家公共电台11月
DAVID GREENE, HOST: Let's talk about what to call a fact that is not a fact. President Trump made a string of statements at the CIA over the weekend. Our correspondent Mary Louise Kelly used this language to describe some of them. (SOUNDBITE OF ARCHI
2017年NPR美国国家公共电台1月
GUY RAZ, HOST: Hey, Naomi, can you just quickly introduce yourself? NAOMI ORESKES: I am Naomi Oreskes. I'm the professor of the history of science and affiliated professor of Earth and planetary sciences at Harvard University. RAZ: So it's fair to sa
2017年NPR美国国家公共电台2月
Broadcast on Coast to Coast: November 7, 2002 Rebroadcast on VOA News Now: November 10, 2002 AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER -- slang and idioms in American politics. RS: Tuesday was Election Day, and Slangman Da
词汇大师(Wordmaster)
The forestry industry in New Zealand is in trouble. Forestry has always been one of our major export industries but in recent years, it has been declining. Nineteen sawmills closed this year, two in the last month. New plantings of trees reached the
新西兰英语
By Lisa Schlein Geneva 12 May 2007 The World Food Program (WFP) says it will be able to restore food rations it was forced to cut for more than a million displaced people in northern Uganda. As Lisa Schlein reports for VOA from Geneva, the WFP says i
2007年VOA标准英语（五月）
By Jessica Berman Washington 11 May 2006 French researchers at the Sanofi Pasteur Institute say they have developed a bird flu vaccine that, so far, appears to be safe and effective in humans. But obs
2006年VOA标准英语（五月）
CANBERRA, Aug. 31 (Xinhua) -- Australia's new chief medical officer, Professor Chris Baggoley, on Wednesday said Australian should not be worried about reports that a mutant strain of the deadly bird flu virus is spreading across Asia and beyond. On
英语新闻
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
白洁得了流感！ 白洁 caught the flu!! 还有谁感觉 really gross!? 1) flu 流感 2) I feel so gross 我感觉很不舒服 3) Call in sick打电话请病假 4) Sick in bed 卧病在床 5) Get well soon！ 快点好起来呀!
OMG美语