四溴化二硼

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(341) / 评论(0) 分类 Scientific American(一)月

New Report Shares Secrets of Rare Blue Diamonds History The Hope Diamond is one of the worlds most famous jewels. It was in the possession of a series of people: kings, bankers, rich women and thieves, before its arrival 60 years ago at the Smithsoni

发表于:2019-01-03 / 阅读(371) / 评论(0) 分类 2018年VOA慢速英语(八)月

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(328) / 评论(0) 分类 医务英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(380) / 评论(0) 分类 农业与发展

By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the

发表于:2019-01-11 / 阅读(360) / 评论(0) 分类 VOA2003(下)-环境与健康

AGRICULTURE REPORT - Cover Crops By Mario Ritter Broadcast: Tuesday, March 23, 2004 This is Steve Ember with the VOA Special English Agriculture Report. The idea to grow a crop that improves the land

发表于:2019-01-30 / 阅读(315) / 评论(0) 分类 农业与发展

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(379) / 评论(0) 分类 万物简史
学英语单词
absolute quadric
algebraic surface of general type
Alverstone
Argens
bar exams
bathurst island
Besnier's prurigo
cachinnation
Camellia grijsii
carb-face
carbon support
Carlson type strain gauge
Chimonanthus salicifolius
cicerones
Clianthus puniceus
color material
combined operations
compactinervine
counterair
Cronquist system
curvularia senegalensis
danican
deceiteous
declaration of means
DHLA
draught penetration
dry arch
duodecimal number systems
Elea
embarkation ladder
emission analyzer
factory director
fajardoes
fire clothing
floating caliper
floating-point representation
frigotherapy
generacion
genus pyracanthas
Gowf
Great Recession
Gröbzig
hammer-mill sieve
hanslicks
hotels sub-index
hunt units
infraaxillary
intelligence-driven
Kimura disease
mass of ore
Meny oscillator
misericors
morrocco
multicontaminated
Nashville warbler
netmeeting
network expression
nitrohumic acid
Nocardia somaliensis
non-continuous braking system
not care a bugger
nuclide generator
oberois
on the take
outthrusts
parallel to the grain
peak charging
poiyarthritis destruens
proudly
rabbit type antibody
recording echo sounder
reesterifying
regularized
rhythmotherapy
rubber duck
Sabonkafi
Saint Martinville
scairt
short-game
side discharge shovel
sixth-
Skapiškis
spank bank
subjective assessment
synthetic casting
tailguts
telegraph codes
thladiantha glabra cogn.
toggle rate
torontonians
trauma actual
two-leg strut
United States President
unlisty
unspring
unstick speed
vertex of parabola
washing and rinsing
water-borne waste
whineier
z-bar