[化] 亚苯基硫脲

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

发表于:2018-12-18 / 阅读(180) / 评论(0) 分类 万物简史

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

发表于:2018-12-24 / 阅读(159) / 评论(0) 分类 Scientific American(三)月

Pet turtles can be unsanitary. But Chinese soft-shelled turtles really up the ante on distasteful behavior. They perform a variation on urinationthrough their mouths. Most land-based vertebrates produce urine to get rid of water-soluble toxic waste,

发表于:2018-12-24 / 阅读(212) / 评论(0) 分类 Scientific American(十)月

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

发表于:2018-12-28 / 阅读(139) / 评论(0) 分类 初学者听力文摘精选

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-30 / 阅读(178) / 评论(0) 分类 有声畅销书-秘密

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

发表于:2018-12-31 / 阅读(129) / 评论(0) 分类 英语听力文摘 English Digest

By Al Pessin Washington 03 January 2006 The commander of U.S. forces in the Middle East says he wants to accelerate the handover of security responsibility in Iraq to the country's new security forces

发表于:2019-01-07 / 阅读(164) / 评论(0) 分类 2006年VOA标准英语(一月)

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

发表于:2019-01-08 / 阅读(175) / 评论(0) 分类 Scientific American(四)月

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

发表于:2019-01-08 / 阅读(190) / 评论(0) 分类 Scientific American(十一)月

By Robert Raffaele Washington, D.C. 13 June 2007 U.S. lawmakers got the chance to question the man who recently led the multi-national force in charge of training Iraq's new security and police forces. U.S. Army Lieutenant General Martin Dempsey told

发表于:2019-01-31 / 阅读(181) / 评论(0) 分类 2007年VOA标准英语(六月)

By Selah Hennessy Dakar 14 May 2007 Civilians from the northern Casamance region of Senegal are being displaced again, following renewed fighting between rebel groups. Hundreds of people are reported to have fled to the nearby Gambian border region t

发表于:2019-01-31 / 阅读(170) / 评论(0) 分类 2007年VOA标准英语(五月)

Science and technology 科学技术 Reptilian micturition 爬行动物的排尿 That's a relief 可算是方便了 Softshell turtles urinate through their mouths 鳖类通过其嘴部小便 WHY did the turtle stick its head in a bucket? 为什么乌龟

发表于:2019-02-03 / 阅读(221) / 评论(0) 分类 经济学人科技系列

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

发表于:2019-02-04 / 阅读(315) / 评论(0) 分类 英语新闻

BEIJING, Aug. 8 (Xinhua) -- China on Wednesday started to review anti-dumping measures it imposed on chloroprene rubber imported from a Japanese company, the Ministry of Commerce said. The move came after the ministry received complaints that Japan E

发表于:2019-02-05 / 阅读(237) / 评论(0) 分类 英语新闻

Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf

发表于:2019-02-06 / 阅读(232) / 评论(0) 分类 英语新闻

A bureaucrat was hiking when he came upon a shepherd tending a large flock. The bureaucrat took a fancy to the sheep and asked the shepherd, If I can guess how many there are, may I have one? The shepherd thought it unlikely the man would guess the e

发表于:2019-02-07 / 阅读(178) / 评论(0) 分类 趣味英语

By Phuong Tran Dakar 10 April 2007 In Chad, dozens of people have been reported killed or wounded in fighting that began Monday between government forces and rebels in the eastern part of the country near the border with Sudan. Chad's government says

发表于:2019-02-07 / 阅读(223) / 评论(0) 分类 2007年VOA标准英语(四月)

今天我们要学的词是bureaucracy。 Bureaucracy, 官僚。美国国防部长盖茨上周末公开对军方庞大的官僚体制提出批评。 Gates took aim at what he called a bloated bureaucracy, 他还保证要亲自过问,精简军方的官

发表于:2019-02-08 / 阅读(153) / 评论(0) 分类 英语单词荟萃

Volkswagen has devised a new catalytic converter that could fix the majority of the cars in the US affected by the diesel emissions scandal, as details emerge of its attempts to satisfy regulators. 大众汽车(Volkswagen)设计出一种新的催化转

发表于:2019-02-08 / 阅读(187) / 评论(0) 分类 英语新闻

Conflict resolution marked the career of former Finnish president Martti Ahtisaari who has received this year's Nobel Peace Prize for his efforts to secure peace in various regions of the world. In this report from Washington, Senior Correspondent A

发表于:2019-02-12 / 阅读(164) / 评论(0) 分类 VOA标准英语2008年(十月)
学英语单词
a dupe
active depesit
aero-washing gasoline
aeroborne disease
amalgamated plate
ante-
bewildered by
C3e
campinas
carry everything before it
catboats
clashnessies
clutch pop
cogg
combined developing and fixing
constupration
copper-nicked converter
coupling buckle
cultural contact
cyclic product code
dance flies
deuterozooids
differential length
dost
drevers
dynamic packing
dynamoelectric
eooanetoxin
equilibrium hydrogen
erection-drawing
ESD type boiler
examination of bilirubin in urine
example code
FAXLink
ferrite tape
great bahama i.
hierarchy of data
house decorators
hum modulation factor
Hymenolepis
image spot
intravitreous
knee cap bandage
lechering
Likud
liquid droplet
mark form sequence
martelloes
MISTABRONMUCOFLUID
model of contract
morbidostatic
moving range method
nonoptimality
ntns
oil burning auxiliary boiler
opisthodelphic type
orbital-nasal septum
originating terminal
out - of - pocket costs
overplanning
oxychorid
Oxyfume-20
paguma
passup
physical measure
pit-a-patting
pixyish
plate motion
pork type
precast reinforced concrete framed support
preservation by partial
president taylors
private shares
proportioned
pure oxygen top-blown converter
raster data structure
Recons.
redistilled water
room draught
rorant
schistosomiasis of spinal cord
sea-monster
semantic test
set-in-stone
shahbazi
sparring partner
stock-yard
stookers
subpolyhedron
suppositionary
take something in good part
take the words right out of sb's mouth
taking fire
tap-dancings
termination rack
troglodytics
twin-probe snow-density gauge
uncrossed
upper critical magnetic flux density
vein of olfactory gyrus
weightlessness switch
zinc-alummite