异丙基苯基酮;异丁酰苯

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(185) / 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(166) / 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(148) / 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(138) / 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(186) / 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(198) / 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(329) / 评论(0) 分类 英语新闻
学英语单词
adrenocortical adenoma
aquaticus
artificial neural net
ashburn
ashkelon
atm.,atm
b-line counter
ball platform scale
beachful
bellows type pressure gauge
bidi leaves
blade crank
bleeding in late pregnancy
bog gale
borland
bottom lateral bracing
cardace
centesis
Cioquiet's needle sign
Colerain Heights
conjugate convex cone
constant value control
CPVE
current production
datum quantity
Deogsan
diadelphous
direct visual tracing
disremenber
dorsomedian car buncle
dyers' oak
eadness
eions
elanoides forficatuss
endless mower
Entocolax
ergocornine
exchangeabilities
feminist theology
Feren
flocks
fogbell
foretasters
frabjous
Genriyetty, Ostrov
giley
Ginetu I.
good this week
gracilaria canaliculata
humber bridges
imageo
Indian subcontinent
intramolecular crosslinking
Inula helenium L.
inversion of oceanographic element
ishbel
Jian Sing Bank Limited
loan agent
Madinani
manufacturer's inspection certificate
margrave
maribous
mean relief ratio of basin
membrane keyboard
menaquinone
mesode
metasyntactic variables
multibeam interferometer
mycetal
Nagir(Nagar)
nephr(o)-
Netensil
objective analysis data
oil ... palm
onehour
oxide film treatment
Pakhtusova, Ostrov
percid
presplitting technique
prevalant
pseudepipodite
quadratic integers
reading proof
Rydberg series
sago-grain stool
sapiro
schiavo
sixth column
strawberry generation
super acid
tageteses
tannahill
tectonic dynamics
telemetered information
tile cell
trajectory bucket-type energy dissipator
turn-key job
undiluted
variegated cutworm
veneer board
War Ship Changed from Merchant Ship
zucarine