桂拉唑

A hundred years ago, there are one and a half billion people on earth. Now, over six billion crowd our fragile planet. But even so, there are still places barely touched by humanity. This series will take you to the last wildernesses and show you the

发表于:2018-12-03 / 阅读(339) / 评论(0) 分类 探索与发现2012年

A MARTINEZ, HOST: Summer camp is an American tradition. But it's a completely new experience for kids who come to this country from refugee camps. This is a story about a summer day camp that immerses newcomers in American culture. It also sharpens t

发表于:2018-12-17 / 阅读(346) / 评论(0) 分类 2017年NPR美国国家公共电台8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(347) / 评论(0) 分类 探索与发现2012年

By Phuong Tran Dakar 16 February 2007 Carnival season is a time for music and revelry, and not just in Brazil. In Cape Verde, some musicians want to show that Brazil's famous carnival rhythms also have roots in Africa's musical history. Phuong Tran

发表于:2019-01-12 / 阅读(391) / 评论(0) 分类 2007年VOA标准英语(二月)

Azaz Residents Pick Up After Aerial Bombings The residents of Azaz clean up and mourn after Wednesday's deadly bombing by Syrian government warplanes. Azaz had been peaceful in recent months, although forces of the rebel Free Syrian Army have had to

发表于:2019-01-13 / 阅读(463) / 评论(0) 分类 VOA标准英语2012年(八月)

YA Author Wisdom: Sandra Cisneros RACHEL MARTIN, HOST: Throughout August, we're bringing you stories and advice from authors who have written for young people about that pivotal moment when they leave home and set out on their own. It's a series we c

发表于:2019-01-17 / 阅读(407) / 评论(0) 分类 2016年NPR美国国家公共电台8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(381) / 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(386) / 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(384) / 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(354) / 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(387) / 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(360) / 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(330) / 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(375) / 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(428) / 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(373) / 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(376) / 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(393) / 评论(0) 分类 探索与发现2012年

At the peak of the dry season in the Kalahari, water arrives in the Okavango. It fell as rain a thousand miles away in the highlands of Angola and has taken nearly five months to reach here. The water drives out insects from the parched ground which

发表于:2019-01-23 / 阅读(351) / 评论(0) 分类 探索与发现2012年

By Doug Levine Washington 16 April 2006 Jazz Appreciation Month got underway with the unveiling of donated items from the families of two jazz legends and a famous jazz photographer to the Smithsonian

发表于:2019-02-02 / 阅读(527) / 评论(0) 分类 2006年VOA标准英语(四月)
学英语单词
accelerator pedal bracket
antennal furrow
automatic slide lock gear
automatic test generation system
battalions
betelgeuses
bizardite
blackdamp
Boris I
browse member
cellulose nitrate lacquer
Chidenguele
conditional-lethal
contour cutting
corporate-training
counter flow screen
CSPRNG
Darbas
day-taler
demilitarized zones
digit function
divergence tendency
doubleminded
Einhorn's disease
El Cerrito
espelette
family Recurvirostridae
fecundability
four-phase modulation
free ash
from this day onwards
gasoline content gage
grocery stores
grohl
growse
growth zones
hand gauge
Hlatikulu Dist.
i-timbred
identifying chromosomes with light microscope
individual plant propagation
interesting
iso-OMPA
lawnterne
Lichtenburg
lid off
liquidation proof of debts
lived dialectic
loss of liberty
megaphagia
mesophylla
microelectrode system
migratory permutation
multiminicore
multivector device handler
national recovery act
neckera pennata (l.) hedw
network of forest
Ortolo
over shoot angle
overswarmed
Oxandra lanceolata
pilao
Pilgerodendron
Processus supracondyloideus
prof.
quantronium
raices
revdanskite (revdinite)
rights clearance
rolling massage
sacrifying
sand reeds
screen bumper
Sebileau's bands
silo base
sludge mixing tank
smeltery waste
snow slide dynamics
sodium isoascorbate
solitarywave
stator current
storage cask
stout beer
straightedge
subjective method
super-consistent
Susques
tack strength
tax anticipation note
tgpt
to-gains
tow target
unconstrainable
unstate
usurpings
verfication of additive independence
warehouse entry
welter-weight
with the skin of our teeth
zeriba
zomotherapy