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(64) / 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(57) / 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(71) / 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(115) / 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(60) / 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(49) / 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(115) / 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(60) / 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(75) / 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(82) / 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(72) / 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(74) / 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(90) / 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(66) / 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(61) / 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(63) / 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(96) / 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(59) / 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(66) / 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(72) / 评论(0) 分类 探索与发现2012年
学英语单词
4-hydroxypyridine
accident forecast
Addieville
alamitos
Antad
attesting to
Berestivka
biliary plexus
blanket party
Bom Jesus da Lapa
bombesins
Bortrychiaceae
capitals of nicaragua
chondrosamic acid
clonal variant
cotching
course line selector
critical path planning
cryofiltration
cusparine
cyclemys flavomarginata
de jure population
DEdr
detached rock
Dialpak
diggin'
disembarker
dog clamp
editorialisations
electric car retarder
emissary veins
endocarditis chordalis
engage one's attention
eracillin
espresso maker
feeder lines
field lateral
film counter
film lubricant
fissurae cerebelli
flamencas
front fork spring
front-wheel
hardening-agent
herb-doctor
hereabove
Huggins' operation
immediate acknowledgment
inferior thyroid veins
jammy Arab
kaeser
like a chicken with its head off
line emission
loading cycle
lonchaeids
low-noiser
metanopirone
Mudershausen
natural advantages
non-testifying experts
nonplanar
nonpsychedelic
output pin
pervay
planning of birth
pretty-please
prevocational evaluation
pugnar
real-timer
returnable containers
rotation gear
rough murmur
seau
second probability distribution
selenic silver
self-cleaning centrifugal oil filter
sempronius
short peroneal muscle
slitches
sour cream butter
Sponsored post
stadium increment
step-sibling
structural memory
student welfare
subah
submaxillas
Tasselot, Mt.
telechelic polymer
telemetering thermometer
teti-
the house of stuart
thiefed
traveling tax
Tripleurospermum tchihatchewii
ubbelohdes
unlimited register machine
unprovidently
upspeaking
valerianinde
ziptie
zoutpans berg (soutpansberg)