具纹孔并有增厚的细胞壁

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(229) / 评论(0) 分类 VOA2003(下)-环境与健康

Andy wasn‘t that way, but I was. The idea of seeing the Pacific sounded good, but I was afraid that actually being there would scare me to death - the bigness of it Anyhow, the day of that conversat

发表于:2018-12-05 / 阅读(258) / 评论(0) 分类 有声英语文学名著

These aren't miniatures, they are life-size. So far, the Chinese have only dug up 10% of the site. And already thousands of warriors and some 10,000 weapons have been discovered. Look closely at the f

发表于:2018-12-07 / 阅读(172) / 评论(0) 分类 万里长城

Throughout their long history, the Chinese have been farmers. If you are committed to your land, you stay put and accumulate possessions--land, livestock and homes that you fill with furniture and goo

发表于:2018-12-07 / 阅读(175) / 评论(0) 分类 万里长城

It's a thousand times longer than any monument ever built. Started before the Birth of Christ, it was still being built when Columbus sailed to America and millions died in its making. What unspeakabl

发表于:2018-12-07 / 阅读(127) / 评论(0) 分类 万里长城

In the heart of a harsh winter, Meng Jiangnu(孟姜女) decided to visit her husband who had been sent to work on the construction of the wall. Bringing warm clothes for her beloved husband, she went

发表于:2018-12-07 / 阅读(158) / 评论(0) 分类 万里长城

It is a staggering 2,700 miles longer than the first Great Wall of the Emperor Qin. There is no wood, water or stone in the desert. But the Han managed to build a wall that has resisted 2,000 years of

发表于:2018-12-07 / 阅读(168) / 评论(0) 分类 万里长城

And many never returned home, ending up in graveyards like this one. Large tombs for generals, small ones for the soldiers, and all of them died defending the Great Wall. But the soldiers' misery did

发表于:2018-12-07 / 阅读(170) / 评论(0) 分类 万里长城

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

发表于:2018-12-30 / 阅读(180) / 评论(0) 分类 国家地理2008年

Cock-crow 雄鸡报晓 Cocks crow in the morn 雄鸡报晓, To tell us to rise, 催人起早。 And he who lies late 谁要赖床睡懒觉, Will never be wise; 脑子肯定不开窍。 For early to bed 早早睡觉早早起, And early to rise, 就会

发表于:2019-01-01 / 阅读(189) / 评论(0) 分类 幼儿英语童谣朗读

迈克尔.杰克逊:Off the wall When the world is on your shoulder 当你需要肩负起世界的时候 Gott straighten up your act and boogie down 你就应当挺直身板随声起舞 If you can't hang whth the feeling 如果你还是找不到感觉

发表于:2019-01-03 / 阅读(216) / 评论(0) 分类 迈克尔杰克逊经典歌曲

1.Pakistan condemns a deadly attack in which a purported CIA airstrike unsucessfully targets al Qaeda’s No.2 man in a border village. 2.In Iraq, a court official says the chief judge in Saddam Husse

发表于:2019-01-08 / 阅读(195) / 评论(0) 分类 美联社新闻一分钟2006

在这次节目里我们要给大家介绍两个都是以wall这个字为主的习惯用语。Wall这个字是什么意思呢?Wall就是一堵墙的墙。有不少习惯用语都跟wall这个字有关

发表于:2019-01-11 / 阅读(251) / 评论(0) 分类 美国习惯用语

我们上次讲了几个由up这个词开头的习惯用语。今天再学几个。 Up这个词可以解释为往上,例如在这个习惯用语里: up the wall。 Wall当然是墙壁,up the wall字面意思是上墙。上墙可不是件轻而易

发表于:2019-01-14 / 阅读(178) / 评论(0) 分类 美国习惯用语

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(303) / 评论(0) 分类 英语新闻

Plan B - Writing's On The Wall Plan B是一向有坏男孩之称的英国创作歌手兼演员Ben Drew的艺名。去年四月份他令人惊艳的单曲She Said成功打进英国单曲榜前十。这首Writing's On The Wall与She Said出自同张专辑

发表于:2019-02-07 / 阅读(177) / 评论(0) 分类 流行英文歌曲

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(263) / 评论(0) 分类 趣味英语

Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo

发表于:2019-02-07 / 阅读(132) / 评论(0) 分类 英国学生科学读本

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(215) / 评论(0) 分类 英语新闻

Antibiotics, as the name implies, work against life, or more specifically against living cells. Since our bodies are also made up of living cells, the antibiotics have to distinguish between the cells in our bodies and the cells of the bacteria causi

发表于:2019-03-06 / 阅读(172) / 评论(0) 分类 英语时差8,16
学英语单词
A-mdo
acid diamide
administrative arrogance
angioma of chest wall
anise hyssops
autume
Avdan
bare state
batch feeder
bindingness
bourrus
Bunsen-Kirchhoff law
butterfly agitator
came to the world
castellanus altocumulus
Cayugan
Chinese-Polish Joint Stock Shipping Company
clock-doubled
combine tillage operation
conge-nital falciform ablatio of retina
context evaluation
controlled shrinkage annealing
conversion factor
cuprate nomenclature
custom-tuned
cutterbar
dasey
design time
device partnership
Dion and the Belmonts
dural venous sinus
electronic converters
embark for
feather-beddings
Feklistova, Ostrov
frequency telemetering
gangsaws
geomatics
germano
Goru, Vârful
hearthplaces
hijras
hot-chamber die casting
hyperthyreosis
hypoketonemic
Illschwang
induction voltage divider
inspissated blood-serum
intermediate transport system
internal conditions
investigational drugs
itinerant workers
jaw's-trumps
JPRA
korean barbecue
land whales
leaf-litters
lunch break
MacOSX
Masbate
mc68030
meddlers
medial geniculate nucleus
minutum
monofractals
monopeptide
multi-scale rule
nellen
new bone formation of cortex
pelissero
pitch thread
Precambrian
present azimuth
program projection
propeller accessories
red-spotted purple
refiler
rhesus antigen
Road-grader
root mite
sapphire d'eau
scaritoxin
sensory cell of type I
silicone-clad silica fibre
silkatine thread
silver potassium cyanide
sink rate
st. lucias
stabiles
steer through
subhepatic recesses
suturae ostealis
tejas
telescoping valve
tenor clef
Thibetans
titanium (ti)
trilobite
underthinkers
Valsalva manoeuvre
variation of mining stope ore reserves
well-according