单词：vaccum distillation
单词：vaccum distillation 相关文章
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)
Steve Jobs was racing to ensure the Macintosh 乔布斯想要先声夺人 was the first personal computer to have icons on the screen. 确保Macintosh是第一台屏幕上有图标的个人电脑 But just before it was due to be unveiled, 而就在Ma
名人传记
About one thousand years ago, war and famine forced the Hakka ancestors to depart from China's central plains, embarking on a collective southward migration. 上溯千年，因战乱和饥荒 客家人的祖先从中原腹地出发 开始陆续大规模
舌尖上的中国第一季
Cooking is one big science experiment and chefs have been gaining fame for more explicit uses of scentific techniques and tools in the kitchen. Now, according to an article in the December issue of physics world, mixologists the folks behind the bar
Scientific American(十二)月
Cooking is one big science experiment. And chefs have been gaining fame for more explicit use of scientific techniques and tools in the kitchen. Now, according to an article in the December issue of Physics World, mixologiststhe folks behind the bara
Scientific American(十二)月
By Paula Wolfson Washington 25 December 2006 U.S. President George Bush heads to his Texas ranch Tuesday for a week-long holiday break. But as VOA's Paula Wolfson reports from Washington, it will be very much a working vacation. President Bush is ex
2006年VOA标准英语（十二月）
By Martin Secrest Washington, D.C. 18 April 2007 There may have been advances in the development of a vaccine to protect people against the H5N1 avian influenza virus, or bird flu. Researchers say it could be possible to substantially increase global
2007年VOA标准英语（四月）
If you could take a vaccine that would protect you against cancer, wouldn't you take it? Well, for cervical cancer, there is a vaccine. It protects against a virus called HPV, which can lead to cancer of the cervix. But a new study reports that many
VOA标准英语2010年(十一)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)
direct a./ad. 直接的(地)v. 指挥 direction n. 方向,方位 director n. 指导者,主任 directory n. 人名地址录,(电话)号码簿 disappoint v. 使失望 解析：disappointment n. 失望 d
英文语法词汇
oil field 油田 wildcat 盲目开掘的油井 percussive drilling 冲击钻探 rotary drilling 旋转钻探 offshore drilling 海底钻探 well 井，油井 derrick 井架 Christmas tree 采油树 cr
英文语法词汇
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）
Have you ever said you would do something but then never really followed through? Perhaps you were talking about losing a few pounds, quit smoking or find a better job. Sometimes you dont finish or even get started because you dont know exactly what
阅读空间
Something called the Danish Twin Study 一个叫丹麦双胞胎的研究表明， established that only about 10 percent 普通人在生物学允许的限度内的寿命， of how long the average person lives, 仅仅有百分之十 within certain bi
TED演讲科学篇
Those hours that with gentle work did frame, 时光老人曾用精雕细刻 The lovely gaze where every eye doth dwell, 刻出这众目所归的美颜， Will play the tyrants to the very same, 也会对它施暴虐于某一天， And that unfair whi
莎士比亚十四行诗全集
1) graduate cum laude 以优等成绩毕业, 绩点3.5到 3.74 2) graduate magna cum laude以优异成绩毕业, 绩点3.75到 3.99 3) graduate summa cum laude 以最优异的成绩毕业，绩点4.0
OMG美语
Brandy From Wine： How Alcohol Is Turned Into Brandy? 白兰地酿造工艺精湛，特别讲究陈酿时间与勾兑的技艺，其中陈酿时间的长短更是衡量白兰地酒质优劣的重要标准。干邑地区各厂家贮藏在橡木桶中的
英语听力文摘 English Digest
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经典英文广播剧
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经典英文广播剧