聚晶体

Researchers: Recycled Concrete's Time Has Come SOUTH BEND, INDIANA Recycling in the construction industry has become big business. It's easy to find new life for everything from old windows to wood beams. But until now, concrete the most widely used

发表于:2018-12-08 / 阅读(152) / 评论(0) 分类 VOA标准英语2016年(八月)

Snow 雪 Snow comes from clouds, and it is made of snowflakes. 雪从云里来,它是由雪片形成的。 As snowflakes grow bigger and heavier in the cloud, they fall toward the ground. 当云中的雪片变得更大、更重时,它们就会落向

发表于:2018-12-13 / 阅读(122) / 评论(0) 分类 与美国小学生一起学英文第1册

Here's the key part. 接下来是关键的部分。 The solution nearest the wall spins faster than the solution closer to the middle. 离试管壁最近的溶液,要比中间的溶液旋转得更快。 That difference in velocity creates sheer str

发表于:2018-12-18 / 阅读(140) / 评论(0) 分类 TED演讲教育篇

Textalyzer Aims at Deadly Distracted Driving 能够测试驾驶时是否分心的神器 Fifty years ago, British inventors made and marketed the first electronic breathalyzer. The alcohol gauge has become standard issue for U.S. law enforcement crack

发表于:2018-12-24 / 阅读(141) / 评论(0) 分类 2017年Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(257) / 评论(0) 分类 Scientific American(十)月

新gre作文写作考察考生完成题目过程中是否能够融合批判性思维和分析写作能力,以下是gre考试写作部分issue的优秀写作实例,通过这些优秀范文或是习作,考生可以借鉴里面的短语、句子或思

发表于:2019-01-08 / 阅读(122) / 评论(0) 分类 GRE作文

SCIENCE REPORT – January 16, 2002: Snow Facts By George Grow This is the VOA Special English SCIENCE REPORT. Winter weather has arrived in northern areas of the world. In much of the United States,

发表于:2019-01-08 / 阅读(158) / 评论(0) 分类 科技之光

SCIENCE IN THE NEWS - December 10, 2002: Snow By George Grow VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with SCIENCE IN THE NEWS, a VOA Special English program about recent dev

发表于:2019-01-08 / 阅读(193) / 评论(0) 分类 科技之光

FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. Im Faith Lapidus. BOB DOUGHTY: And Im Bob Doughty. Today, we will tell you everything you wanted to know about snow. (MUSIC) FAITH LAPIDUS: Winter has returned to northern parts of t

发表于:2019-01-11 / 阅读(128) / 评论(0) 分类 2011年VOA慢速英语(一)月

An online guide to snow and other ice phenomena Art Chimes | Washington, DC 18 December 2009 Photo: SnowCrystals.com Time again for our Website of the Week, when we showcase interesting and innovative online destinations. For those of us in the north

发表于:2019-01-13 / 阅读(141) / 评论(0) 分类 VOA标准英语2009年(十二月)

Oregon Advertising Studio Tracks Fukushima Radiation If you were to picture the sort of person who might take the lead in gathering radiation data from the Fukushima nuclear accident, Marcelino Alvarez probably wouldn't come to mind. My background is

发表于:2019-01-13 / 阅读(173) / 评论(0) 分类 VOA标准英语2011年(七月)

SCIENCE IN THE NEWS - Winter Cold: Everything You Ever Wanted to Know About SnowBy George Grow Broadcast: Tuesday, January 10, 2006 (MUSIC) VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob D

发表于:2019-01-16 / 阅读(163) / 评论(0) 分类 2006年慢速英语(一)月

网上求职易犯的错误 Don't just hit up the big guys. 不要只关注大型的招聘网站。 Big-name websites like Monster and CareerBuilder are wonderful resources for online job hunting, but don't stop there. They charge fees that some smal

发表于:2019-01-17 / 阅读(119) / 评论(0) 分类 英语学习方法

Of all the plastic produced since the 1950s, less than 10% has been recycled. 20世纪50年代以来,产生的所有塑料中,只有不到10%得到回收。 The vast majority ends up being dumped, most of it in landfill. 其中大部分都成了垃

发表于:2019-01-26 / 阅读(147) / 评论(0) 分类 经济学人科技系列

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember. Today, we tell you everything you ever wanted to know about snow. (MUSIC) VOICE ONE: Justin Snow of the Indianapolis Colts stands in

发表于:2019-01-31 / 阅读(358) / 评论(0) 分类 2010年慢速英语(一)月

Cameras were flashing at this recent Constellations concert in Atlanta. And the morning after, fans who wanted to see what has everybody else got, could go to a new website thats helping to hit the right note. It is called Recreate Mynight and it con

发表于:2019-02-02 / 阅读(114) / 评论(0) 分类 英语杂谈

By Birungi Machrine Kampala 19 February 2008 A documentary has been released that depicts child labor in Uganda. The film, called Stone Cold is by local writer Michael Wawuya. It explores the causes and costs of child labor in a typical village. Voic

发表于:2019-02-09 / 阅读(163) / 评论(0) 分类 VOA常速英语2008年(二月)

Let's begin by looking at what we currently understand about the neuroscience of Alzheimer's. 让我们先看看目前神经学上对老年痴呆的了解。 Here's a picture of two neurons connecting. 这是一张两个神经元连接的图。 The p

发表于:2019-02-13 / 阅读(160) / 评论(0) 分类 TED演讲国际问题篇

Marine Mammals Since there is such an abundance of food in the sea,it is understandable that some of the efficient, highly adaptable, warm-blooded mammals that evolved on land should have returned to the sea.Those that did have flourished. Within abo

发表于:2019-02-17 / 阅读(132) / 评论(0) 分类 双语有声阅读

Chemistry on an experiment called the crystal. First the formation of chemical substances dissolved in water solution, solution Sheng Yu evaporating dish, the evaporating dish placed in steel tripod, the following alcohol lamp heating, control-relate

发表于:2019-02-21 / 阅读(155) / 评论(0) 分类 英语美文
学英语单词
Absam
abstract types
achor
act-d
adjustable keelblock
Alangium lamarckii
arousers
arsenical autimony fahlore
attenuation mean free path
ballet folklorico de mexico
Barahāt
Bargate beds
blank flat
Blankenbach
blocking distance protection equipment
blood purge
bulk sugar carrier
butyl p-toluenesulfonate
checking symbol
chucs
cinnamomum camphora sieb. var. noninale hay.
city administrators
coccobacillus
cocklet
controlled electric drainage
copper(ii) arsenide
coxal spur
cruciform
cyesis
Cyrenaican
dabr
debonaires
depicts
eildon hills
embold
enaliornithids
express telegram
follow-up link
foreign exchange business
formal instruction
global optimality
glyceryl triethyl ether
hippuriss
historical approach
hystereis moter
ifr flight
imposition
improper fuel combustion products
information-oriented
inner sensor
intercloud medium
known liability
logarithmic plot
long-term planning
magneto transistor
manifest heterotropia
mechanical-type unit
media life
Nageia nankoensis
nasal shell
nongeothermal
numnah
on hire
one foundation
operational room monitor
packaging symbol
pancreaticoduodenectomy
pece
pgal (phosphoglyceraldehyde)
phytosociologist
Pinus serotina
provide funds
quantitative organic chemical analysis
response time of valve
RF choke
scholfields
sedimentary particles in suspension
selective top down
seraphins
Sherman, John
skewerwood
star lifting
stop tab
strepsirrhines
supinate
Talguppa
tel quel
tert.-butyl phenoxyl ethanol
tide-staff
titanium potassium oxalate(T.P.O.)
transfixture
trot
turbo-fed
unwanted image
vettell
visual balance
voice guard
wagon wheel grain
war and peace
war ship
wrak
wurali