模仿文本: Andrea Sella is filling theatres and lecture halls up and down the country with dramatic demonstrations of chemistry. He is a professor of University College London and a sleeves-rolled-up bench chemist. Colleagues go to him because o

发表于:2018-12-04 / 阅读(30) / 评论(0) 分类 高级-Advanced Listening

As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

发表于:2019-01-03 / 阅读(62) / 评论(0) 分类 2014年VOA慢速英语(八)月

Take for an example, bio-diesel fuel can be made from vegetable oil and animal fats, and its chemical make up includes carbin chains, joush worth knows that he didn't learn the chemistry class and hasn't taken chemistry yet. Brook horper, a field in

发表于:2019-01-08 / 阅读(109) / 评论(0) 分类 CNN2012年(五)月

Those planets are all going to be so hot, and you cant develop something as complex as life. Scientists have gone back to the drawing board, looking to find worlds capable of supporting life, small rocky planets like earth. We dont know that life has

发表于:2019-01-22 / 阅读(39) / 评论(0) 分类 自然百科2010年

大气ATMOSPHERE 大气组成Atmosphericcomposition 空气质量Airquality 大气化学Atmosphericchemistry 大气成分Atmosphericcomponents 大气颗粒物Atmosphericparticulates 二氧化碳Carbondi

发表于:2019-02-02 / 阅读(88) / 评论(0) 分类 英文语法词汇

By Tom Rivers London 07 October 2009 Ada Yonath (file photo) Two Americans and one Israeli share this year's Nobel Prize in Chemistry for their work showing how the DNA code is translated into life itself. Americans Venkatraman Ramakrishnan and Thom

发表于:2019-02-03 / 阅读(48) / 评论(0) 分类 VOA标准英语2009年(十月)
学英语单词
a nobody
abse
accion
ADAC (analog-digital-analog converter)
alae sacralis
alineations
Arraes
bathing costumes
be on
beglin
belted magnum
bit-slice microprocessor single-phase clock system
bone-seeking isotope
breakdance
by right
catch drain
cerithium columna
colonscopies
combined aggregate grading
connecting rod and reach rod jaw
constant-return-to-scale technologies
data collecting
date of clearance
dawn horses
decoding error
depth-charge
diospyros sunyiensis chun & chen
Dourados, R.
draughthouses
dry tree
eau minerale
ecological ethics
elastodurometer
electron typing
enclosed forging die
english-educateds
entodontopsis nitens
explosion factor
export-import bank of the japan
facetting
fecho
fringe node
GM1 gangliosidosis
gotam
half-world
halfboards
haurwitz
herbert hoovers
heterocracy
Hughes, Thomas
in the mountains
indefendable
Ionn-N'yugoayv, Gora
Keane
laywoman
Leuchars
lipoplatin
Lithocarpus melanochromus
London theory of superfluidity
longgrass
lutrin
manufactured housing
mechanical endurance test
non-reverse coupling
one way amrs
outsurvives
owner-managed
pole divisor
power circle diagram
problem oriented action
produce exchange
purified black antimony
quiddlers
quisqualis indica l.var villosa clarke
radar automatic data transmission assembly
rauvomitine
repeatability precision
rhythm sections
ruby-eyed dilution
rupophobia
Sankarani
seeley
shifrin
single-level device
spring hook
spring seismometer
squidder
St-Jérôme
synthetic porcelain
Tetrastigma macrocorymbum
the Civil Aviation Authority
thomases
three-wide
tossing
touch a port
usucaption
vinoba
warning amount
Wind Ridge
world car
Yoichi-gawa
Zébéné