胶态硅

For 40 years, Paul Karason was a fair skin son of the American Northwest, freckles and reddish-blond hair. Like most people who grow older, Pauls hair turned white. But how does he explain this? What was that Aha moment were you think, you know, my

发表于:2018-12-11 / 阅读(166) / 评论(0) 分类 访谈录2008

Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

发表于:2018-12-31 / 阅读(131) / 评论(0) 分类 英语听力文摘 English Digest

-Sheldon:Worst renaissance fair ever. renaissance:文艺复兴 fair:集市,集会 史上最逊的文艺复兴集会。 -Leonard:Please let it go, Sheldon. 别再墨迹了Sheldon。 -Sheldon:It was rife with historical inaccuracies. be rif

发表于:2019-01-01 / 阅读(204) / 评论(0) 分类 生活大爆炸第二季

DEVELOPMENT REPORT - Aid Group Designs System to Make Dirty Water Safe to Drink By Jill Moss Broadcast: Monday, October 17, 2005 This is Steve Ember with the VOA Special English Development Report. Ea

发表于:2019-01-02 / 阅读(133) / 评论(0) 分类 农业与发展

Broadcast: May 5, 2003 By Jill Moss This is the VOA Special English Development Report. Each year more than two-million people die from diseases caused by drinking dirty water. That is the estimate of

发表于:2019-01-04 / 阅读(178) / 评论(0) 分类 VOA2003(上)-社会广角

This is the VOA Special English Development Report. Jeffrey Schwarz coordinates the water filter project for North America from the Carnegie Library Pot Shop, adapting technology developed in Central America during Hurricane Mitch in 1998 The Braddo

发表于:2019-01-11 / 阅读(143) / 评论(0) 分类 VOA慢速英语2009年(六)月

AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be

发表于:2019-01-12 / 阅读(167) / 评论(0) 分类 2015年VOA慢速英语(七)月

AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin

发表于:2019-01-19 / 阅读(156) / 评论(0) 分类 2018年NPR美国国家公共电台12月
学英语单词
a mean
acceleration test equipment
acid Thorex process
after pulse
air navigation radar
amentias
ancillary instrument
apodia
approximate condition
atmospheric drag
atrioventricularia
audit requirement
avarams
bat mitzvah
booking form
Capsularogenin
CFAM
charactersketch
check valve mounting bracket
Co-Liver
cockchafers
cold lead
contone printer
cooperative study
crack-brained
cryocooler
Dalton's alloy
deep snow set
delanders
deprogramming
dinemasporium strigosum
diphenylethylenes
diversified company
doubletype wedge
draw-bar yoke
DTL (diode transistor logic)
elevating screws
evidentiary effect
extrinsic gettering
FAQ page command
fire-resisting window
flange lubricator control box
foatrope knot
furcellata
gambinos
Gashuun Nuur
gelsemiumism
gobis
graciles
hydrogen chlorides
hypothermophilous
ipted
lesbian love
loanzon
magnetic tape group
miner's canary
misdelivery
monometallism
N-o-nitrophenylglycine
naupliosoma
Nedelišče
negative dissipation instability
nrem sleeps
orientale
out of house
Perho
phytal animal
polychlorinated benzenes
potexviral
power-rating
right-hand moment
Roman chairs
Saiyid Hamīd
sambucifolia
self-listening
semi-hardy vegetable
sinis
soll
squawking
store violation
string-band
sub-dividings
sucker punching
suffer for
supracellular
switch through
take a message for
tectorial membrane
the sport of kings
thoracogastroschisis
training squadron
trivalent ion
under field conditions
uroporphyrins
van der Velden's test
wave-height spectrum
weihgt on board
whytte
wordscan
yard (yd)
Zalieutes
Zapiola Seamount