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
abusage
admiralty brass
afrocypris maltia
agrobiologist
alloying addition agent
animal husbandman
areolet
assn.,ass'n.,Assn.
attitudinisers
automatic packaging line
baby still
be kept upright
be right
bead ring
bearinglike
beta-blocking
binding enforceable contract
Blis-To-Sol
californium
carbon zinc battery
Cefasabal
center pillar
cheddar pinks
chilling rate
conjugated double bond compound
corner firing burner
corynespora sesameum
crena ani
cross-readings
cubic parahemihedral
cyclical responsiveness
Dasuki
deep bulkhead
deep quest
delay lens
demeanour
depolarizes
diagonal pouring
disciplining
dry-cured
DZAPO
episema
exchange slip
fearnaught
feel disposed for
fellow subsidiary
fire disclimax
fitting part
FQ-PCR
gladiolas
gladnesses
governabilities
Gsm.
hydrologic accounting
inframaxiallary
initial data base
injury.
insects awaken
international system of control
load proportioner
luggish
made something of oneself
marginal user
marthens
metropolitan station
midintestine
mine ventilation network
morake
natural tendency
neural computer
neutral flow plane
nongraphitic
one-third maximum wave
Osaminethacine
oscillation photography
Plieux
power aging
reclock
rhizoma nardostachyos
ruthenium red
Rākābād
Schultz's sterol reaction staining method
strip-me-naked
table telephone set
Tan-do
target predicted position
technisms
test loads
text-oriented structure command
threskiornithidaes
too much for
torque spanner adapter
tuck timber
underidentification
underlying type
verifiable
viothenat
ward leonard system
water power site
Whelen Springs
Zhongpu Township