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(158) / 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(132) / 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(110) / 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(104) / 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(150) / 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(154) / 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(293) / 评论(0) 分类 英语新闻
学英语单词
a-sparkle
accept the consequences
agricultural zoology
amnion-
amphistethus astarte
anti-epithelial Serum
anti-phlogistic
antiepic
antispeculative
Arrigorriaga
automatic margin adjust
be felled
Bodal's test
Brinkmann number
bugging out
camelCasing
cape-froward
Change to
chopboats
component day
composition of feed
congenital absence of thyroid gland
controlments
corbetta
counterdrug operations
cutting algorithm
data chief
deadbeat response
defrost(ing)
detection window
detoxication and promoting granulation
Elanus leucurus
equipment drainage system
ethenic
farriols
femme-fatales
forward declared
free on board destination
fuliginosus
grampas
gudes
guyanans
heater bias
humata typermanni moore
inductothermy
lanuginosus
Leiodidae
lxxxiiier
magnetically-focused image converter tube
makers
Mardorf
Mitani
MK-950
mode expansion propagation method
Nageezi
Niels Henrik David Bohr
nyagassola (niagassola)
Oikopleura
oil production technology
on the borders
on-the-street
open exhaust
outact
palaeoscolecidans
peer at
pneumathodium
polyprotein
preparationist
pseudopeziza trifolii(bivona-banardi) fuckel
re-up
reading spring
remote support facility
residual legacy
rock channeller
seamless steel tube for drilling
seedless orange
self-locking fastener
Setian
show ... round
Sidnaw
SOGAT
strip coal
Symplocos vacciniifolia
synchro differential receiver
takua pa (kopah)
tape operated typewriter
target-marketing
technical inspection work
time field calibration
tooth marks
twin-trackings
ultrasonic level measuring device
unbugged
underwrite transportation insurance
unexpectednesses
user key
western samoan monetary units
wet paper atmometer
What did you ask him
wish sb. further
within-child
zeyringite