无味红霉素,依托红霉素

Photo: NASA US forces in Iraq speak with 2 NASA astronauts aboard the ISS in a video downlink aired on NASA TV about life on the station, their military careers and what it is like to live in space for up to 6 months, 29 Dec 2009 When many Americans

发表于:2018-12-08 / 阅读(166) / 评论(0) 分类 VOA标准英语2009年(十二月)

By Carol Pearson Washington 28 February 2007 watch Antibiotic Resistance report Penicillin and Erythromycin are examples of antibiotics that used to be one-time miracle cures. These drugs and other antibiotics are now less effective because bacteria

发表于:2018-12-16 / 阅读(126) / 评论(0) 分类 2007年VOA标准英语(二月)

STEVE INSKEEP, HOST: This year Americans will spend more than $2 billion on probiotics, supplements aimed at boosting what are called good bacteria inside us. One part of the market that's growing rapidly is probiotics for babies and kids. Here's NPR

发表于:2018-12-17 / 阅读(97) / 评论(0) 分类 2018年NPR美国国家公共电台5月

发表于:2018-12-30 / 阅读(124) / 评论(0) 分类 自考英语(一)78讲

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(172) / 评论(0) 分类 60秒科学

SCIENCE IN THE NEWS - International Treaty on Tobacco Control / Research Projects on Glaucoma By Broadcast: Tuesday, March 08, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special Englis

发表于:2019-01-02 / 阅读(135) / 评论(0) 分类 科技之光

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(132) / 评论(0) 分类 Scientific American(五)月

BUENOS AIRES, July 16 (Xinhua) -- Argentinean tennis star Juan Martin Del Potro, ranked 9th worldwide, said bringing home a medal from the London 2012 Olympic Games would be akin to scoring a Grand Slam win. In an interview with local daily Clarin Mo

发表于:2019-01-09 / 阅读(159) / 评论(0) 分类 英语新闻

President Massimo Moratti and Internazionale wish to thank Claudio Ranieri and his staff for the professionalism and commitment they have shown through these past months, the statement said. The Nerazzurri were defeated 2-0 by Juventus on Sunday, to

发表于:2019-01-11 / 阅读(137) / 评论(0) 分类 英语新闻

ROBERT SIEGEL, HOST: Now some good news, especially for babies around the world. Scientists in the U.S. and India have found an inexpensive treatment for a common infection. It could save hundreds of thousands of newborns each year. The treatment com

发表于:2019-01-16 / 阅读(140) / 评论(0) 分类 2017年NPR美国国家公共电台8月

RACHEL MARTIN, HOST: Go online, walk through any health store or supermarket, and you'll find all kinds of products being sold as probiotics. They're being promoted for all kinds of things - preventing upset stomachs, boosting the immune system, figh

发表于:2019-01-16 / 阅读(113) / 评论(0) 分类 2017年NPR美国国家公共电台12月

Diet and the Brain A study in the Proceedings of the National Academy of Sciences finds that brain chemicals linked to addiction are in play with a high-sugar diet, and a study in the Archives of Internal Medicine shows that a high-carb diet had last

发表于:2019-01-30 / 阅读(241) / 评论(0) 分类 60秒科学

By Lisa Schlein N'Djamena, Chad 07 September 2007 Before meeting Chadian President Idriss Deby, U.N. Secretary-General Ban Ki-moon told journalists he would discuss a proposal to deploy thousands of European Union troops and U.N. police officers to h

发表于:2019-02-04 / 阅读(201) / 评论(0) 分类 2007年VOA标准英语(九月)

ROME, Oct. 23 (Xinhua) -- Inter head coach Claudio Ranieri hailed his side's win over Chievo on Sunday ended the San Siro taboo. The Nerazzurri were the only team yet to score a single goal on their own turf this season, but Thiago Motta earned a 1-0

发表于:2019-02-04 / 阅读(165) / 评论(0) 分类 英语新闻

Probiotic yoghurt drinks and supplements dont live up to their promises, according to an EU watchdog. They claim to boost your immune system and help digestion. It concluded there is no scientific proof that products such as Yakult have any health be

发表于:2019-02-04 / 阅读(108) / 评论(0) 分类 阅读空间

10 Great Places to Experience the Simple Life If you need to get away from it all this holiday season, take your stressed-out self to a place where life is a bit less complicated. Real Simple Magazine's managing editor, Kristin van Ogtrop, discusses

发表于:2019-02-04 / 阅读(336) / 评论(0) 分类 阅读空间

ROME, Dec. 7 (Xinhua) -- Inter head coach Claudio Ranieri said luck played against his side following their home loss to CSKA Moscow in the Champions League on Wednesday. He defended his men after a 2-1 home loss to the Russians, which had no impact

发表于:2019-02-04 / 阅读(124) / 评论(0) 分类 英语新闻

THE HAGUE, Feb. 19 (Xinhua) -- Roger Federer grabbed his second title at the ABN AMRO World Tennis Tournament in Rotterdam after beating Juan Martin Del Potro 6-1, 6-4 in the final on Sunday in Rotterdam. The match was a replay of the 2009 US Open fi

发表于:2019-02-05 / 阅读(135) / 评论(0) 分类 英语新闻

THE HAGUE, Feb. 16 (Xinhua) -- Juan Martin Del Potro and Julien Benneteau qualified for the final of the ABN AMRO World Tennis Tournament on Saturday. Second seeded Del Potro beat Bulgarian Grigor Dimitrov 6-4, 6-4. The Argentinean did not suffer a s

发表于:2019-02-08 / 阅读(152) / 评论(0) 分类 英语新闻

Lana Del Rey 微电影《Tropico》!电影艺术赋予了这个倾倒众生的女人一个展示灵魂的机会,这是你无法在平时见到的美丽躯体,意味深长的镜头切换唤醒了我们对于神秘之美的好奇,玄妙的音乐如

发表于:2019-02-17 / 阅读(116) / 评论(0) 分类 流行英文歌曲
学英语单词
absolute ga(u)ge
acid-produced
active TV
alkaline falling film fuel cell (afffc)
amber lily
armature of cable
arnica oil
associative store
Aust-Agder Fylke
backflushes
boiler short-water
Botnen
braganza
bridgemans
canvas dam
carcinoma of pancreas
cardiac nerve
casual
circumscribed palmoplantar keratoderma
colonizations
combplate
compartment mode
compulsoryreinsurance
cosmic flight medicine
cuculus saturatus
cup and ball jointing
dak bungalows
density test
dependency (group)
descending node
difference-differential equation
differential heat of dilution
directional logging
distinguishing
drop-by
dune front
earlock
electrochemical engineering
epic fail!
ethyl acetyl glycolate
fertilizer balance
fish sound
functionally distributed network
genetotrophic disease
geremek
Hensen's plane
inclined rocker
instify
knock off personnel
koras
latrouite
lauver
limited trust
long-timer
main frequency coreless induction furnace
messengered
Myanaung
non-bloating
nonluminous gas
Novello
number of eggs ovulated
Oberhausen-Rheinhausen
oxygraph
palladiumized
parts storage bin
penken
percussion primer
photoactivate
physisorb
pineywoods
postcopulatory behavior
prismoidal
proportional command
quiflapon
Rao formula
remain in a state of flux
remove debris from water
reversing rougher
Schwendikaltbad
soap-stone
spiral-eight cable
spiritual home
st tropez
stellar comparator
sub-aerially
subcrustal
teaseling
test pin
the common touch
thermofield
thin film detector
torpedo tube cap
total vehicle weight
tragedious
twin-hearth furnace
ultimate density
valethamate
vertafume
wall fan
wall luminaire
white-browed
young coastal plain