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(194) / 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(173) / 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(156) / 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(147) / 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(192) / 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(204) / 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(336) / 评论(0) 分类 英语新闻
学英语单词
accelerated eutrophication
adrenal syphilis
arteriae interossea communis
assify
auto-de-fe
band shoe
Beagh, Slieve
bent-gun ion trap
Biebersteinia
bovinic acid
Camellia lutchuensis
casabella
cerodontha (dizygomyza) omissa
chalcidfly
chernozemskis
China State Shipbuilding Corporation
cock-crower
coking tower
complete quadric combination method
component of curve
consecutive elements
corrosion resistant low alloy steel
CZC
dean of guild
differential energy spectrum
digital electronic control
disfaithful
Earle
emigrant bird
engineering advisor
English law
ethmoidal nerve
extended memory function
family Laniidae
faunal extinction
flame ionization analyzer and detector
fleche
flexen
frough
Gaitskellites
gas-liquid chromatograph
geologic abundance
Govǐ-Sümber Aymag
heat flux per unit time
HNPF
hydroergotinine
in-circuit emulator test set
installation package
internetting
intracellular enzyme
Kristallpur
lacquer screen
Las Caňas
laserpuncture
law of general gravitation
microturbulent motion
Milky Bar
moldave
multistage image tube
Nesseby
never-was-er
online sale
overdependence
PACT (programmed automatic circuit tester)
pair glass
Paiva Couceiro
palatine spines
peak pendant
peronosporaless
pit in
play first fiddle
pollsters
propre
Pseudois
Q. J.
reception and departure of trains
relative search
Ricord's chancre
ridington
roaring fire
rose diagram of wind direction
Schefflera khasiana
sellers' markets
semi-automatic circular sawing machine
semioctave
shaped-charge antitank missile
siltanalysis
spring hinge
squeal rule
stability and control augmentation (scas)
steatopyga
styryl carbinol
subvents
tea cozies
the town
thermosensors
thirst-quencher
Titus Flavius Domitianus
transaction branch
two-resonator klystron
vittaria elongata sw.
Witold Gombrowicz