[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(149) / 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(120) / 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(157) / 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(95) / 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(145) / 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(94) / 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(131) / 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(138) / 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(141) / 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(149) / 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(142) / 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(183) / 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(268) / 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(188) / 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(187) / 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(141) / 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(174) / 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(118) / 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(150) / 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(123) / 评论(0) 分类 VOA标准英语2008年(十月)
学英语单词
ABHP
adradii
airfield flight information service (afis)
Alfheim
alicia keys
all-cargo aircraft
allotopy
antinomasias
atomic type
baking chamber
ball bearing plumber block
banksia attenuata
Biocortar
boulud
cassida quadriramosa
cicatrizes
coal seam floor contour map
colour gelatine filter
Constance, Lake (of)
constraint qualification
cra
cyphomandras
d'arenberg
deadbeat dad
decellularize
detergence
diffuse superficial keratitis
diiodofluorescein
double type
ear tatoo
edema during pregnancy
Edward VIII
Egyptian ware
endemic paralytic vertigo
euplantula
faremo
fecky
floppy disk sectors
formation lithology
fused spray deposit
gamma insensitive
geomagnetic bays
getting off the ground
hederaceus
horizontal evaporator
horizontal firing
induced covering space
industrial naphthalene
Kenzhe
Latour-Winter-Eichberg motor
Lilium duchartrei
locums
lofting platform
magnetimeter
majdanek
manhole plate
Marymass
Mediterranean climate
meteorological observation
misinvested
Naresuan
net tolerance
nonventilated
Nordau
nuncupate
opto-electronicss
oxygen fixation
pesquera
processability of product structure
Puccinellia humilis
pulpwood
purification column
pyoumbilicus
pyridoquinoline
racial immunity
radiant heat lamp
Radoviš
rag papers
refuse can
remotely piloted research vehicle
return filter
rice wines
Robert Joffrey
selfleveling
shroud plate
sick with worry
Skeleton axiale
slaveringly
slitherings
stagger moving-target indicator
stremgthening ring
summer-game
surfagauge
systemic movement
texttospeech conversion
triadic semiosis
Uncaria yunnanensis
unconventional railway
underpullers
upward-flows
vanadium oxychloride
wipfel disease