苯硝基甲烷

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(162) / 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(137) / 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(116) / 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(108) / 评论(0) 分类 英语听力文摘 English Digest

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(156) / 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(160) / 评论(0) 分类 Scientific American(十一)月

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(297) / 评论(0) 分类 英语新闻
学英语单词
-reuter
-stan
6-medesone
acute angled triangle
adductor scar
airborne lift
anus praeternaturalis
area of ball imprint
asccaorrhea
bactobolin
behavioral component
bicornuate uterus
bilocation
brenneis
breras
British and Foreign Sailor's Society
butt welded pipe
canine chorea
cell-derived
ceramic matrix
checkering line count
chondrostei
complementray dipole and slot
delegitimizations
epifocus
estimated loss from sales
fatigue contracture
fehmi
fire-retarding division
formless stage
free-field voltage sensitivity
gastritis
General Tariff Rate
generator field breaker
gripping jaw
hemihepatectomy
henhood
Hipstedt
horatian odes
hyalinizing spindle cell tumor with giant rosettes
hysteresis memory cell
imaginably
inclusion body conjunctivitis
inculturation
Infelix
iron handle
keitai shosetsu
Kālān Zīād
labour fund
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Lawrence, Saint
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Low Pt.
master mind
mauer
milius
Morse signal
multifrequency fluid oscillator
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no marks cargo
non-contact measuring device
Novocamid
oversweeping
P. G.
paravane boom
Piza
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pop up bale loader
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progeid
pynote
r.h.p.
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suken
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Taisetsu-zan
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voltage response time
wave-riding
wish sb further