单词:phenylbiphenylyl oxadiazole (PBD)
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MAXIMUS: 1)Archers, three weeks from now I will be harvesting my crops. Imagine where you will be, and it will be so. Hold the line, stay with me, if you find yourself alone riding in green fields wit
014 bedroom Words Bed bedside table alarm clock wardrobe pillow duvet blanket sheet chest of drawers bedside lamp mirror dressing table pyjamas nightdress mattress Phrases Go to bed Get up Set the alarm clock Go to sleep Read in bed Make your bed Be
By Catherine Maddux Washington 28 April 2006 During nearly two decades of civil war in northern Uganda, an estimated 30,000 children have been abducted by rebels and forced to fight or become sex slav
Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal
its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th
This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
An ass and an ox,fastened to the same yoke,were draging a waggon.While the ox was pulling with all his might he he broke a horn.The ass swore that he had got no help whatever from his weak companion.Exerting himself in the labour,the ox b
By Robert Raffaele Washington, D.C. 22 August 2006 watch Cleanup report Various agencies are working to clean up the devastation inflicted on Lebanon's environment, and remove dangerous remnants of the month-long fighting. ----- While bulldozers cle
By Jim Teeple Jerusalem 01 June 2007 Kidnapped BBC Gaza Correspondent Alan Johnston appeared for the first time Friday in a videotape released by his captors. VOA's Jim Teeple has details from our Jerusalem bureau. Handout image released 01 June 2007
The United Nations has confirmed that four of its workers were abducted early Monday in Waajid, in south-central Somalia. According to the U.N., the workers include three foreigners and one Somali. U.N. spokesperson Dawn Blalock said the staff membe
By Peta Thornycroft Harare 07 May 2007 After the high-profile police beating of senior opposition politicians in March, state-sponsored political violence in Zimbabwe is now targeting mid-level opposition activists and ordinary citizens who are being
By Steve Herman Tokyo 14 December 2006 Shinzo Abe (File photo) The Japanese government has told families of Japanese abducted by North Korea that the fate of their relatives will not take a back seat to improving ties with the communist state. VOA's
By Paula Wolfson Washington 08 February 2006 President George Bush is calling for an end to violent protests by Muslims who have been enraged by cartoons that depict the Prophet Muhammad as a terroris
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo
By Gilbert da Costa Abuja 09 May 2007 Attackers carrying assault rifles and rocket-propelled grenades stormed a transport vessel carrying oil workers off the southern coast of Nigeria, kidnapping four Americans late Tuesday. Gilbert da Costa reports
By Carol Pearson Washington, D.C. 05 July 2007 An American man who traveled internationally with tuberculosis - despite instructions not to - has a new diagnosis and is not as sick as government doctors initially said he was. As VOA's Carol Pearson
By Robert Berger Jerusalem 15 May 2007 Israeli and Jordanian leaders have held a summit in Jordan's Red Sea resort of Aqaba in a bid to advance the peace process. As Robert Berger reports from VOA's Jerusalem bureau, an Arab land-for-peace proposal t