12-胺十二碳酸

One of the leading researchers in the field of protein folding is David Baker of the University of Washington, in Seattle. 西雅图华盛顿大学的David Baker是蛋白质折叠领域研究者的领军人物之一。 For the past 20 years he and hi

发表于:2018-12-05 / 阅读(113) / 评论(0) 分类 经济学人科技系列

Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(220) / 评论(0) 分类 (科普英语)Earth and Sky

[00:00.00]Dean accent tap generally speaking [00:05.15]迪安(男名) n.口音;音调 n.(自来水等的)龙头 一般说来 [00:10.29]eastern notice differently Ottawa [00:15.43]adj.东方的;东部的 vt. n.注意;认识 adv.不同地 n.渥太华

发表于:2018-12-13 / 阅读(271) / 评论(0) 分类 高中英语词汇

Researchers Genetically Modify Corn to Increase Nutrition Researchers in the United States say they have discovered how to genetically engineer corn to produce a kind of amino acid usually found in meat. The result is a food with increased nutrition

发表于:2018-12-18 / 阅读(159) / 评论(0) 分类 2017年VOA慢速英语(十)月

Item eight. Vocabulary. fossil, molecule, hydrogen, carbon, sulfur. Petroleum has been important since ancient times. In Latin, the name means rock oil. Petroleum is a fossil fuel. The liquid comes from the remains of plants and animals that died mil

发表于:2018-12-27 / 阅读(74) / 评论(0) 分类 step by step 3000 第一册

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(264) / 评论(0) 分类 知性英语

Section 28 Acid Rain 50 years ago, no one talked about acid rain. Then we didn't really know the harm it was causing to the world. Today almost every adult and school child is aware of acid rain and i

发表于:2019-01-02 / 阅读(140) / 评论(0) 分类 英语导读1000句

But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa

发表于:2019-01-02 / 阅读(127) / 评论(0) 分类 火星生命

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

发表于:2019-01-03 / 阅读(148) / 评论(0) 分类 医务英语

HEALTH REPORT - October 23, 2002: Folic Acid Reduces Fetal Deaths By Nancy Steinbach This is the VOA Special English Health Report. A new study in Sweden has confirmed another important health effect

发表于:2019-01-04 / 阅读(102) / 评论(0) 分类 健康与环境

Acid 酸 Why does the lemon taste sour? 为什么柠檬的味道很酸? It is because of the acid in a lemon. 因为柠檬里有酸。 Then what is acid? 那么什么是酸? All substances with a sour taste are kinds of acid. 所有带酸味的物质

发表于:2019-01-10 / 阅读(100) / 评论(0) 分类 与美国小学生一起学英文第12册

Can Folic Acid Prevent Childhood Autism? From VOA Learning English, this is the Health Report in Special English. A new study found that women who took folic acid supplements in early pregnancy were less likely to have a child with autism. Folic acid

发表于:2019-01-12 / 阅读(153) / 评论(0) 分类 2013年VOA慢速英语(五)月

AS IT IS 2016-02-13 Work Soothes Pain of Acid Attacks In India A caf in India is hiring women who once stayed in hiding after being attacked with acid. One woman, Dolly Kumari, says she stayed inside for two years after a man threw acid on her. He wa

发表于:2019-01-12 / 阅读(139) / 评论(0) 分类 2016年VOA慢速英语(二)月

Acid Attacks Continue in Cambodia Despite Harsher Punishments For Som Bunnarith, memories of the day acid violence changed his life forever are as vivid in his mind as the scars on his skin. When it splashed on me, it felt hot. It even burned through

发表于:2019-01-13 / 阅读(114) / 评论(0) 分类 VOA标准英语2012年(九月)

Pakistani Acid-Attack Victim Enjoys New Life in Texas After taking the oath of citizenship, Julie Aftab celebrated. I have waited eight-and-a-half years to hear those words, and those words mean so much to me, she said. Ten years ago, when she was 16

发表于:2019-01-13 / 阅读(98) / 评论(0) 分类 VOA标准英语2012年(八月)

Magnetic Ring Used to Stop Acid Reflux Heartburn is usually linked to gastric acid that reaches the esophagus when a weak muscle does not close as it should after swallowing. When stomach juices back up into the esophagus, the acid can cause a burnin

发表于:2019-01-14 / 阅读(138) / 评论(0) 分类 VOA标准英语2013年(四月)

Folic Acid Supplements Shown To Reduce Risk Of Autism Green, leafy vegetables, fruits and nuts naturally contain folate, a B vitamin that helps the body make healthy new cells. Most pre-natal vitamins include folic acid because it protects against de

发表于:2019-01-14 / 阅读(129) / 评论(0) 分类 VOA标准英语2013年(四月)

By Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot

发表于:2019-01-16 / 阅读(188) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Melinda Smith Washington, D.C. 07 June 2007 For years, doctors urged women to take folic acid if they planned to get pregnant. Then researchers discovered the nutrient helped reduce the risk of a heart attack. But now a new study shows folic acid

发表于:2019-01-16 / 阅读(161) / 评论(0) 分类 2007年VOA标准英语(六月)

On September 18th, all New Zealand bread was going to have folic acid added to it. However, now the government has decided to wait three years. New Zealand and Australia have an agreement about food standards. Australia is going to add folic acid to

发表于:2019-02-25 / 阅读(164) / 评论(0) 分类 新西兰英语
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airworthiest
all through
around rhythm
assassinates
blister furnace
cable fault search set
cliff-climbing
color mixture
cowhide
crushing hazard
dactylopasia
Darién, Sa.del
defecation reflexes
deoxynorherqueinone
dutch national ballet
ebb-tide
echo depth
eliminatory systems
entropy equation
esterolytic
ethylmorphine
Ficus maclellandii
flameproofed
foreign key table
Fortuitous Accidents
gender-inclusive
genus Melolontha
ghost farmer
Gibbs absorption isotherm
give short measure
halidays
heavenly cities
Hermitian adjoint
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hyl-
ill-paids
IMET-3393
indirect selling
isoparorchis hypselobagra
isotopically labeled material
koichis
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l.e
littlecote
loggy
Lopatina, Mys
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mastadenovirus canine adenovirus 1
Mellitin
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Monagas, Estado
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Myxinidae
neutron polarization
nigrospora sphaerica
nonionic surface active agent
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odd mass
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out-trade
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play at dice
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salt meadow
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splutter
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steam water separation
strike at the root of
supernucleus
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u2
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variable elevation beam
Weda
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