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It's hard to mistake that sound. Now imagine hearing it during a night that can last for months and where temperatures drop as low as 37 degrees Celsius. Enough to give nightmares to musk ox and Arctic hares, the favorite prey of the long-legged whit

发表于:2019-01-08 / 阅读(160) / 评论(0) 分类 Scientific American(一)月

By Kevin Billinghurst Stockholm 09 October 2007 The 2007 Nobel Prize for Physics has been awarded to Albert Fert of France and Peter Gruenberg of Germany for discoveries that have helped fuel explosive growth in the storage capacity of computer hard

发表于:2019-01-11 / 阅读(138) / 评论(0) 分类 2007年VOA常速英语(十月)
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albrecht durers
Algherese
animal chemistry
animal-skins
anisic age
automatic data acquisition equipment
aviator's disease
ballast compactor
bottom pocket
break a leg.
breathing of engine
capitalised
capitals of panama
cat's-paw
clock dial micrometer
cobalt deposits
commerges
commodity ore
condomed
connected solvable algebraic group
contour-length method
conversion factor
Corylopsis yunnanensis
curved surface drawing
cylinder sand cooling machine
dar ben karricha
dislocation of optical range-finder
emergency tyre sleeve
enoxacin
eurya hebeclados l.k.ling
fasculation
femtocoulomb
fig up
fistulatomy
former bar
four letter word
friction-angle
gable cross
gandy dancers
garmezy
gualified
histamine metabolism drug
Hooke's constant
horizontal beam
impoverish
incisurae interlobaris hepatis
inoperations
Jones's albumose
judeo-christianity
koyan
laissez-faire economies
lateral logging
lieutenancies
life of equipment
low sulphur diesel
mangrol cotton
maximum midexpiratory flow
mean normal diameter pitch
Memecylon hainanense
Musculus multipennatus
nannostomuss
orders received book
oyster wife
partition control descriptor
phiales
plane sth smooth
pneumatic servomotor
poe-poe
preattention
preset automatic equalizer
preying
primary vascular tissue
prostitutes
railway police
relative indicators
remainder trusts
Riley, James Whitcomb
rinderpest
rotary derivative
Schultze's placenta
sero-mucous cells
servo operated valve
side sweep
so as
Sparidae
spelter brazing alloy
spongiosity
subtractive colo(u)r matching
tail separator
taiwanaleyrodes indica
tenicide
the north of china
throttled steam
total immersion
tourists
Tuman, Ozero
unidirectional dimensions system
unsacramentally
wheel-spinning
witches' knickers
Zolotarëv