二碘联苯

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(83) / 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(72) / 评论(0) 分类 Scientific American(三)月

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(73) / 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(56) / 评论(0) 分类 Scientific American(十一)月

By Efam Dovi Accra 11 October 2006 Ghana is denying a United Nations report saying that conflict diamonds from rebel-controlled areas of Ivory Coast are being smuggled into the West African nation. The report, expected to be submitted to the U.N. Se

发表于:2019-01-31 / 阅读(108) / 评论(0) 分类 2006年VOA标准英语(十月)

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(108) / 评论(0) 分类 英语新闻
学英语单词
additive system of photographic exposure
ametropias
Anda
anticipation error
antimicrobe
assumption point
Bang Pa Han
behooved
biconditionally
biowarfares
bomfords
budarin
Campylandra
catatonosis
cerebral embolism
chany
clark cell clark
Coliseu
constipe
control sensitive element
coprocessors
Costalchondritis
cradle base
csicseris
deadweights
deglutition center
diaminodiphosphatides
drain the bilge
drumlinoid
dyed goods
electrical sheet or strip
end group
equipment bonding jumper
family veneridaes
fastudine
female genitalias
first cost method
gin stand
green sandstone
Hamilton Dome
heavy-duty relay
horizontal sawtooth correction
huntingtons
limit of floculation
long and short addendum system
lumen standard lamp
management of computing
matrimonial proceedings
Mindaingbin
Mindiptana
monitoring and controlling
neutral plan
Nikolaas Tinbergen
none the worse (for)
OEH
okino
open hole logging
otom
palladised charcoal
pancreas juices
passing lanes
performative meaning
perturbation molecular orbital
petrocco
pithead
polygraphy
posologist
postorbital vacuities
preappoint
prevailing formation
printing options
public-houses
raise money on something
riding between wind and tide
right ascension system
road identification sign
roar on
runway floodlight
scything
searchlight unit
SEC (simple electronic computer)
self arrow
sequential reception
shake sth up
sieling
single-tube injector
slope keypoint compaction
snotnose
surface absorption
synchro resolver transformator
synthetic live-line overhaul
table services
tip-tilteds
trichophore
Tropidophis
tubular radiator
universe abundance
upset the applecart
us navies
Vieja, Sierra.
water depletion