苯丙酸睾酮

Isaac Newton: One of the Worlds Greatest Scientists SHIRLEY GRIFFITH:This is Shirley Griffith. STEVE EMBER: And this is Steve Ember with the VOA Special English program, Explorations. Today we tell about one of the worlds greatest scientists, Isaac N

发表于:2018-12-16 / 阅读(124) / 评论(0) 分类 2011年VOA慢速英语(六)月

Student Architects Shine in Solar Energy Contest Dreams and designs of young architects are shining brightly in Washington at the bi-annual Solar Decathlon. They have come from around the world, college students combining their education with their i

发表于:2018-12-16 / 阅读(121) / 评论(0) 分类 VOA标准英语2011年(九月)

The penguins stay when all other creatures have fled because each guards a treasurea single egg rested on the top of its feet and kept warm beneath the downy bulge of its stomach. There is no food and no water for them. And they will not see the sun

发表于:2018-12-27 / 阅读(136) / 评论(0) 分类 探索与发现2012年

by Michael W. Flynn First, a disclaimer: Although I am an attorney, the legal information in this podcast is not intended to be a substitute for seeking personalized legal advice from an attorney licensed to practice in your jurisdiction. Further, I

发表于:2018-12-30 / 阅读(181) / 评论(0) 分类 法律英语 Legal Lad

ENVIRONMENT REPORT - November 1, 2002: Shrinking Ozone Hole over Antarctica By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. Australian researchers say the hole in the ozone layer o

发表于:2019-01-02 / 阅读(119) / 评论(0) 分类 健康与环境

EDUCATION REPORT - November 7, 2002: Foreign Student Series #8 Tests By Nancy Steinbach This is the VOA Special English Education Report. We continue our reports about how foreign students can attend

发表于:2019-01-11 / 阅读(118) / 评论(0) 分类 教育与新闻

By Peter Fedynsky Washington, DC 07 August 2006 watch Peacekeeping report Lebanon has been pounded by outbreaks of violence and war throughout its recent history. In 1978, following years of tension along the country's border with Israel, the United

发表于:2019-01-11 / 阅读(256) / 评论(0) 分类 2006年VOA标准英语(八月)

Scientists Develop Test for Fake Whiskey St. Andrews is famous for many things. Its the home of golf - the Old Course, and the Royal and Ancient Golf Club by the sea - some of the most recognizable images in world sports. It's also famous for being h

发表于:2019-01-13 / 阅读(138) / 评论(0) 分类 VOA标准英语2012年(三月)

They are constantly on the move. New-born calves have to be up and running the day they are born. But the vast herds do not travel alone. Wolves. Packs of them, eight to ten strong, shadow the migration. And they are hungry. Its the newly born calves

发表于:2019-01-23 / 阅读(156) / 评论(0) 分类 探索与发现2012年

But they are hungry and eager to reach their mother whos delayed feeding them on this special day. Now she lures them with the promise of milk, the only food the cubs have known since they were born, deaf and blind beneath the snow some two months ag

发表于:2019-01-23 / 阅读(153) / 评论(0) 分类 探索与发现2012年

Day 10. And the mother has let her cubs a mile from the den. Its time to put them to the test. Theyve grown enormously in confidence, but they dont have their mothers sense of urgency. At last it seems that they are ready for their journey. And they

发表于:2019-01-23 / 阅读(138) / 评论(0) 分类 探索与发现2012年

Midsummer on the tundra and the sun does not set. At these altitudes, the suns rays are glancing and not enough of their energy reaches the ground to enable trees to grow. Youll need to travel five hundred miles south from here before that is possibl

发表于:2019-01-23 / 阅读(134) / 评论(0) 分类 探索与发现2012年

As we travel south, so the suns influence grows stronger. And at 50 degrees of latitude, a radical transformation begins. Summers here are long enough for broadleaf trees to replace conifers. Broadleaves are easier to eat and digest, so now animals c

发表于:2019-01-23 / 阅读(152) / 评论(0) 分类 探索与发现2012年

The advance of the seasons brings constant change. As the suns influence diminishes in the north, so the deciduous forests of America begin to shut down, losing their leaves in preparation for the dark, cold months ahead. One season hands over to ano

发表于:2019-01-23 / 阅读(140) / 评论(0) 分类 探索与发现2012年

The character of the forest changes as we descend, becoming ever darker and damper, favoring different kinds of animals and plants. Less than two percent of the sunlight reaches the floor. But even here there is extraordinary variety. In the Great Is

发表于:2019-01-23 / 阅读(127) / 评论(0) 分类 探索与发现2012年

The sun beating down on tropical waters powers the weather systems of the globe. Moisture evaporates from the warming ocean and rises to create great storms. The winds generated out at sea sweep inland across the continents. As they travel across the

发表于:2019-01-23 / 阅读(144) / 评论(0) 分类 探索与发现2012年

Deer are frequent casulties of the harsh winter. And these leopards are not above scavenging from a corpse. African leopards could never survive here. But the Russian cats have thick fur to shied them from the cold. There are only 40 Amur leopards le

发表于:2019-01-23 / 阅读(166) / 评论(0) 分类 探索与发现2012年

Their secret is teamwork. Impala are their favourite prey. They start to hunt and the pack splits up. An aerial viewpoint gives a new insight into their strategy. As the dogs approach their prey, they peel off to take up separate positions around the

发表于:2019-01-23 / 阅读(138) / 评论(0) 分类 探索与发现2012年

The dogs know their prey must come out or drown. Now its a waiting game. The rest of the pack are calling. Theyve made a kill in the forest and this is an invitation to join in the meal. The impala is in luck. A pack this size kills once a day and ev

发表于:2019-01-23 / 阅读(146) / 评论(0) 分类 探索与发现2012年

All across southern Africa, all animals are journeying for the same reason. Buffalo join the great track. Nowhere else on Earth are so many animals on the move for the same urgent purpose. They are all heading for the swamps of the Okavango, a vast i

发表于:2019-01-23 / 阅读(157) / 评论(0) 分类 探索与发现2012年
学英语单词
ABIOL
acceptance of delivery
adiantum flabellulatum
air-water mixture
analysis of essays by computer
antikeratinizing agents
Arteveld, Jacob van
be not worth the candle
beagle is.
Beloniformes
benzoin ethyl ether ethoxybenzoin
blunderingly
bus-tie circuit breaker
carbaalanes
center of gravity limits
Chamaeanthus wenzelii
cheiloschises
choppy grade
coefficient of seepage
collection agencies
colo(u)r code
commutative diagram
coning model
consensus management
contrahe
cooling in retort without pressure
cranial mesonephros
cytobiosis
daedaluss
dantiprat
dendroclimatography
deuterium-impreganated emulsion
di butylamine
Dobois' abscess
double swiveling uncoiler and recoiler
downrushing
engulph
ermelin
Ettinghausen
fanning
final value
Fort Portal
genus Hydrodamalis
geostrophic equation
goes down the pan
greek churches
guanidoacetic acid
hagen-poiseville law
hand vibrograph
hanging walls
Headbay
hisn
Ingololo
isoliquiritigenin
junk heap
Lenard tubes
lightpipe optics
Llanrhystud
Maiombe(Mayombé, Massif du)
maximal criterion
menieriform
Mezas
myozide
narratorship
nerifolin
nervi spermaticus externus
Newton polyhedron
nonrepetitive transaction
oesophag-
pachyserica brevitarsis
paint spraying
passive measurement
pay envelope
petrospheres
photo-respiration
prankster
PRGI
pseudoactive
push-bicycle
radioactive decay rule
recovery FGD process
retention table
roentgen absorbed dose
sewage preliminary basin
silicon thiocyanate
slurried ballast
standby current
subergorgin
summa theologica
Syzygium malaccense
tension releasing pin
terminal figure
three step
thrust in by head and shoulder
tiwa regional
Tom gin
transtime
twenty-four-hours
two-way attenuation
unpermissivenesses
volatile element
Zairean, Zairian