[有机化学] 1-羟基-2-甲氧基苯

By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.

发表于:2018-12-07 / 阅读(85) / 评论(0) 分类 VOA2003(下)-农业与经济

86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson (Start at 1'02

发表于:2019-01-02 / 阅读(108) / 评论(0) 分类 科技之光

Humulone 律草酮 Huperzine Serrate P.E 千层塔提取物 Hydroginkgolic acid 氢化白果酸 Hydroginkgolinic acid 氢化白果亚酸 p-Hydroxyacetophenone 对羟基苯乙酮 p-Hydroxybenzylalcohol

发表于:2019-01-03 / 阅读(74) / 评论(0) 分类 医务英语

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(97) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in

发表于:2019-01-08 / 阅读(134) / 评论(0) 分类 Scientific American(四)月

AS IT IS 2015-09-20 Documentary Shows US, Mexico Fighting Drug Cartels 纪录片:墨西哥打击贩毒集团 A new movie follows two communities -- one in the United States and the other in Mexico -- as they try to stop drug cartels from harming thei

发表于:2019-01-12 / 阅读(87) / 评论(0) 分类 2015年VOA慢速英语(九)月

UN Wants Australia to Take Lead Against Asian Drug Traffic 联合国促澳大利亚带头打击亚洲毒品走私 From VOA Learning English, this is the Health Lifestyle report. United Nations officials say they have recently seen an increase in the

发表于:2019-01-12 / 阅读(76) / 评论(0) 分类 2016年VOA慢速英语(八)月

Synthetic Drug Problematic for US Authorities Augusta County, Virginia, is a rural county in the Blue Ridge Mountains, two and a half hours southwest of Washington. It has a big problem. Sheriff Randy Fisher says Augusta County was once known as the

发表于:2019-01-13 / 阅读(149) / 评论(0) 分类 VOA标准英语2012年(六月)

Researchers Say Malaria Drug Could Also Treat Cancer Scientists know that human cancer cells grow by getting energy from adjacent tumors, where cells have begun to self-destruct. The spread of cancer is accelerated by the death of these cells. This p

发表于:2019-01-13 / 阅读(103) / 评论(0) 分类 VOA标准英语2012年(三月)

UN:MethUseSurginginSoutheastAsia A report by the United Nations Office on Drugs and Crime (UNODC) warns that production and use of synthetic drugs such as amphetamine-type stimulants is widespread and growing globally. The report identifies Southeast

发表于:2019-01-13 / 阅读(71) / 评论(0) 分类 VOA标准英语2011年(九月)

Another Drug Crisis: Methamphetamine Use By Pregnant Women AILSA CHANG, HOST: A new study published today finds that a growing number of women in recent years have been using amphetamines like crystal meth during their pregnancy. The rates of use hav

发表于:2019-01-23 / 阅读(66) / 评论(0) 分类 2018年NPR美国国家公共电台12月

Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the

发表于:2019-01-28 / 阅读(73) / 评论(0) 分类 英语博客 A cup of English

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月,俄罗斯最大的大学图书馆之一发生了火灾

发表于:2019-02-02 / 阅读(72) / 评论(0) 分类 英语新闻

Raw anti-drug campaign awakens state Ted Landphair | Missoula, Montana 04 February 2010 Photo: Montana Meth Project Adults across Montana were frightened by what they were seeing. Some hardly recognized their meth-addled teenagers. Related Links Mont

发表于:2019-02-02 / 阅读(77) / 评论(0) 分类 VOA标准英语2010年(二月)

By Melinda Smith Washington 14 May 2007 Top executives of the company that makes a powerful painkiller called Oxycontin admitted this week they lied about the drug's addictive qualities in order to boost sales. As VOA's Melinda Smith reports, worldwi

发表于:2019-02-03 / 阅读(126) / 评论(0) 分类 2007年VOA标准英语(五月)

Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in

发表于:2019-02-07 / 阅读(101) / 评论(0) 分类 英语博客 A cup of English

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(97) / 评论(0) 分类 阅读空间

Among the beautiful pictures That hang on Memory's wall, 在那些美轮美奂的画中间挂在记忆墙上的, Is one of a dim old forest, That seemeth best of all; 是古老的森林一抹幽暗,似乎在其中画工最善; Not for its gnarl

发表于:2019-02-11 / 阅读(47) / 评论(0) 分类 美国语文第六册

本期内容: A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(74) / 评论(0) 分类 夏说英语新闻晨读

Voice 1 Hello. Im Ruby Jones. Voice 2 And Im Marina Santee. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. A small candle burns. It re

发表于:2019-02-21 / 阅读(83) / 评论(0) 分类 环球英语 Spotlight
学英语单词
Actinoscirpus
Actinothecaceae
aerocannon
alness r.
apsidal surface
aqueous caustic
automatic manual station
Bashkirians
Beuerberg
Bine-el-Ouidane
Biograd
Boltongate
Calanthe graciliflora
Caliciviridae
cathode flame
chored
collector area
color pyramid
coloured gold
come in contact with
common pathway
contra arithmetic series
count wheel striking mechanism
crackable
cubic kilometre
Dalwad
desaxe
diskspace
double dictionary
drawstring bag
energy diagram
enripens
Faverges
fimbristylis autumnalis roem et schult
five o'clock
flenoury
French inhaling
fridrich
Graecicize
gravity purity
guide vane assembly
gyroscopic angular deviation detector
hatchety
higher order predicate calculus
if you'll pardon the expression
in order for something to happen
inter-connectednesses
international standard bibliography
iron(ii) azide
jar proof
kletter
lateral-line organ
light radiation sensor
matzahs
messengership
migrating balloon
mogroester
Montanha
Mother's Night
Motier
no delivery attempted
north atlantic treaties
notched underlated preheater
on weekdays
oscillation impulse
outside mix nozzle
overhelm
oxypropionic acid
paper industry
phenolic glycoside
phymatosorum membranifolium
picket-fence
random connection
reabsorbed cost
redeemed
redimere
reversalability
Rioja,rioja
saxo grammaticuss
schnier
servomechanism compensation
shortsheeted
side wall frame
single-sided magnetically linear motor
soap cutting machine
Sotacor
sound title to land
spinnabler
sports lottery
state court
submirrors
summer term
supertwists
teasings
thermal coil
tricalcium silicate
type selection
underteaches
utets
vaporizing combustion chamber
vitriolating
zonograms