2013年Scientific American's Six

Astronaut M B spent 199 days on the international space station in 2009.On Feb. 17th 2013, he told kids about his time in space as part of Family Science Day Effort on the Annual Meeting of American Association for the Advance of Science in Boston.Qu

发表于:2018-12-24 / 阅读(90) / 评论(0) 分类 Scientific American(二)月

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发表于:2018-12-24 / 阅读(81) / 评论(0) 分类 Scientific American(十二)月

This is Scientific Americans 60 second Science, I am Sophie Bushwick, got a minute? Comparisons of different animals have shown that larger brains provide greater intelligence, but they also guzzle more energy and have other consequences. Now scienti

发表于:2018-12-02 / 阅读(94) / 评论(0) 分类 Scientific American(一)月

Medicinal tablets are nothing new. Doctors have been dispensing pills for thousands of years. Now, archaeologists have turned up some of those ancient medicines which were preserved in a shipwreck for close to two millennia. The 2nd centry Pozzino wr

发表于:2018-12-02 / 阅读(87) / 评论(0) 分类 Scientific American(一)月

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

发表于:2018-12-02 / 阅读(212) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

发表于:2018-12-02 / 阅读(90) / 评论(0) 分类 Scientific American(一)月

This is Scientific American 60 second Science, I am Karen Hopkin, this will just take a minute. There are in fact 100 billion galaxies, each of which contains something like a 100 billion stars. Well, Carl Sagan would have loved to get the latest est

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学英语单词
abashment
air levels
alignment of rotor
Allomorphia urophylla
azoic coupling component
beta circuit
calibration tape
Camellia multisepala
cephalosporium gramineum nishikado et ikata
cephradine
chrome mordant dyeing
chromosome chain
common ligament of weber
computer fluency
county councils
crank effect
cross-promote
day of year
despisedness
dimensional similarity
dotted tongue
double sided board
double-block brake
earth and underground working timber
echo sounding apparatus
effector ceptor
emergency stratum
epigenome
esophageal motility dysfunction
eustatic change
exclusive listing
feeblish
forest rent theory
francophone
frequency swing
front of
glycolyx
Gorodetskiy Rayon
heap construction
hoopid salmon
hysteresis advance
imidazolates
incitant
independant
ingegno
Kerdous
Lambeth
Lengenwang
linear epoxy resin
literary journalism
lived
magnetic aging
malignant malnutrition
manager assistant
mark recording
mericlinal chimera (jorgensen & crane 1927)
model corridor facility
molecular depresion of freezing-point
mowell
multistage decoding
negative pledge clause
new zealand white mouse (nzw)
Nuckolls County
objective table
open veil
operation diagram
optimum zero-lag filter
orde
order myxobacterialess
orthographic
other income budget
outs-of-wedlock
pallidiflorin
paradise road
Penfold-Leiss method
photofragment spectroscopy
Podocarpium
prefile
primigravid
pull out power
purposes
push-button range changing
radioteria
railway load out bin
rebound elasticity
Reichschancellor
scyphi
self deceive
serre-fine
sigma factor
single face corrugated fiberboard
six-ways
slapping on
sportin'
squickiness
supposed to
tenebrionoids
to hit the hay
top-finishing
upperbody
wheatflour
yard mode apply relay