[化] N-苯基马来酰亚胺

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(146) / 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(116) / 评论(0) 分类 Scientific American(三)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(91) / 评论(0) 分类 初学者听力文摘精选

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(89) / 评论(0) 分类 英语听力文摘 English Digest

By Paula Wolfson Washington 07 July 2006 President Bush says the seven missile launches this week by North Korea provide an opportunity for the world to come together to deal with Pyongyang's nuclear ambitions. The president says he is optimistic di

发表于:2019-01-04 / 阅读(189) / 评论(0) 分类 2006年VOA标准英语(七月)

By Bill Rodgers Washington. D.C. 29 March 2006 watch Civil War report A grieving widow touches her husband's coffin as it is carried to a cemetery The continuing sectarian violence in Iraq has raised

发表于:2019-01-06 / 阅读(223) / 评论(0) 分类 2006年VOA标准英语(三月)

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(134) / 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(134) / 评论(0) 分类 Scientific American(十一)月

By Scott Stearns White House 21 March 2006 President Bush President Bush says there is more fighting ahead in Iraq, but he is confident U.S. troops will be victorious. Mr. Bush held a White House news

发表于:2019-01-13 / 阅读(197) / 评论(0) 分类 2006年VOA标准英语(三月)

Libyans Optimistic on Democracy, Challenges Loom In the first blush of enthusiasm after the nine-month struggle to oust Moammar Gadhafi, many Libyans are optimistic that the country will be able to move toward democracy with little payback for the ir

发表于:2019-01-13 / 阅读(174) / 评论(0) 分类 VOA标准英语2011年(十一月)

Hi! This is Stever Robbins, host of the Get-it-Done Guys Quick and Dirty Tips to Work Less and Do More. Grammar Girl is working on her book this week and since I do a lot of public speaking, she asked me to talk about how to use similes and metaphors

发表于:2019-01-30 / 阅读(195) / 评论(0) 分类 英语语法 Grammar Girl

By Mohamed Elshinnawi Washington, D.C. 07 March 2006 watch IAEA report A defiant Iran warned the International Atomic Energy Agency that it would press ahead with uranium enrichment if the agency push

发表于:2019-01-31 / 阅读(161) / 评论(0) 分类 2006年VOA标准英语(三月)

By Margaret Besheer Washington 09 May 2006 Iraq's Prime Minister-designate Nouri al-Maliki talks to reporters during a news conference in Baghdad, Tuesday, May 9, 2006 Iraq's Prime Minister-designate,

发表于:2019-01-31 / 阅读(179) / 评论(0) 分类 2006年VOA标准英语(五月)

By Melinda Smith Washington, DC 12 January 2007 watch Organ Donor report Human tissue for transplant being delivered to a hospital The traffic in human organs for transplantation is a volatile issue in the medical community and among desperately ill

发表于:2019-02-02 / 阅读(193) / 评论(0) 分类 2007年VOA标准英语(一月)

今天我们要学的词是,limited。 Limited, 是有限的意思。拉美裔移民在维吉尼亚州的王子威廉姆斯县罢工一天,The one-day work boycott appeared to have a limited effect on businesses in the county. 但似乎并没有对

发表于:2019-02-03 / 阅读(128) / 评论(0) 分类 英语单词荟萃

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(264) / 评论(0) 分类 英语新闻

Iraq's electoral commission has announced the preliminary results of last weekend's provincial elections, amid some accusations of irregularities and voting fraud. The Iraqi army and security forces, however, say that they will maintain order despit

发表于:2019-02-06 / 阅读(110) / 评论(0) 分类 VOA标准英语2009年(二月)

今天我们要学的词是timing。 Timing, 时机。中文里说,赶得早不如赶得巧。英文里说, Timing is everything. 时机决定一切。The timing of his marriage proposal was perfect, 他求婚的时机恰到好处。 目前就业市场

发表于:2019-02-07 / 阅读(120) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是optimistic。 Optimistic乐观的。美国第二季度国内生产总值公布后,President Barack Obama said he is 'guardedly optimistic' about the direction of the U.S. economy, 美国总统奥巴马表示,他对美国经

发表于:2019-02-18 / 阅读(109) / 评论(0) 分类 英语单词荟萃
学英语单词
'chute
acoustic bridge
Aeta
anglo-australian
anisole
arsey
atomic warfare
Batidaceae
Beinheim
caddo l.
cameronians
channel bend
ciliary branches
clinker grinder
colour proud
commercial credit documente
cone lubrication grooves
coschmidt number
coulianos
crank rotation mechanism
crispatura tendinum
daily mail service
darius the greats
daunsel
derail accident
duty in civil affairs
ectropy
Egyptian alfalfa weevil
epiaucubin
erks
espresso coffee
extraneous explosion
fellow-travel
file marks
firemark
fluorinest
gallium(iii) chloride
gamma streptococcus
gastro-epiploic glands
gravel plug
gun-dogs
halo phase
hardware appliance
hieracosphinx
higher-class
in-plant exposure
incineration of liquor
Keuruu
laser micro-strain gauge
Lassell, Mt.
liquid metal thermometer
lymphonodi axillares
mammal family
may-augusts
microphone transformator
milled feathers
mitral valve (or bicuspid valve)
Moita
multiple crit
myasthenic reaction
myoelectrometer
ncdad
Not my cup of tea
nozzles to shell
onit
Orgametril
osburn
parallelinerved
Peter's-pence
peziza
post-reform
pulse top magnitude
rarotic
relativist
republican guards
rest on
rhinoplastic operating instrument set
Roma, Prov.di
San Pablo, R.
semolina
shackle insulator
side direction stress analysis
single tooth
Snover
spectral processing
spindle-speed control
split jump
sportpony
strange to relate
submillimeter laser emission
super high frequency line
symmetrical breaking capacity
Syringa villosa
tatterss
three dimensional structure
tirelessly
tow-haired
twenty to seven
urey-miller
wall accretion
weather proof enclosue
zygosporium echinosporum