1-苯-2-丙醇

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(84) / 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(57) / 评论(0) 分类 Scientific American(十一)月

By Meredith Buel Washington 18 April 2007 A closely divided U.S. Supreme Court has upheld a ban on a controversial abortion procedure. VOA correspondent Meredith Buel has details from Washington. Pro-abortion demonstrators in front of the US Supreme

发表于:2019-01-12 / 阅读(91) / 评论(0) 分类 2007年VOA标准英语(四月)

South African Youth Program Serves as Link to Pro Golf Under a blue sky, and amid a scenic landscape, these young golfers are dreaming big. This amateur tournament is one of the most prestigious competitions in its category in the country. Winning it

发表于:2019-01-13 / 阅读(43) / 评论(0) 分类 VOA标准英语2012年(三月)
学英语单词
aerodynamic time
allamandas
angelil
anovulatory cycle
at-panel displays
ball probe
Blakeney Point
bog
bottom moraine
busy beaver
Catarole process
chiasmic
cincotti
concrete operation
confirm initial voice channel
cutura
debutante (france)
decomposition of system network
deleted scenes
dimensionless representation
double measurement
e-democracies
egg dance (india)
embattlement
Embiodea
enghelab
false dragonhead
fight a war of annihilation
flexible fiber-optic gastroscope
four-way plug valve
genus ajugas
germanium(iv) oxide
graphic report
headering
herd header
idle junction
indeterminate problem
indictive
inert insulating layers
information booth
kleiners
liquid-solid flow
luckett
machine independent solution
made a god of her belly
management prognostic
mean value process
metabolic turnover rate
metacarpo-phalangeal articulation
metacognitions
Mishnaic Hebrew
modulated current
moisture - proof packaging
mold pig iron
Moronal
Musca sorbens
Muskie Act
Nedelišče
Neelin
non-prossing
open up something
operational priority
outside crank
pattern move
perorated
phoenicurus leucocephalus
piir
piled out
platy-monocrystal
pneunatic tyre
porcupiness
pseudointraligamentary pregnancy
reasonable and nondiscriminatory
regression estimate
rubber membrane
ruddimen
schedule of approtionment
sea salt nuclei
self-tuning adaptive filter
senectus
silene latifolias
social mechanism
solar energy engineering
solar heated swimming pool
spirit of camphor
squizzling
stabilization basin
Taos Indian Reservation
teacher centre
technical director
the bench
thulium halide
tonsillar mycosis
totara tree
tourist cabin
tracheopharyngeal
trioval
unenforced obedience
unsolicited commercial email
viscosine
water tight motor
yod dropping