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(71) / 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(61) / 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(75) / 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(112) / 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(105) / 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(105) / 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(81) / 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(88) / 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(76) / 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(76) / 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(95) / 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(70) / 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(66) / 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(66) / 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(99) / 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(61) / 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(70) / 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(75) / 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(63) / 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(222) / 评论(0) 分类 2006年VOA标准英语(四月)
学英语单词
acetolyzed
acute cowperitis
alfalfa plant bug
andreievich
Apert syndrome
applauders
archeochemistry
austan
be distracted by
beta-chain
calcitie dolomite
Campbellstown
catey
cedar of Goa
choses in action
compressed sensing
confiscatory tax treatment
Confoederatio Helvetica
corduroy road
cutter tooth
Daphniphyllum longistylum
digital audiotape
disinclination
drawingoff
erythro(cyto)lysin
experimental designs
extended digit
extrabinomial
fibre optic distribution frame
finite termination
flautist's chin
flexible shaft wire
fluid rotor gyroscope
foundation leg
franquene
furile
gas control
genus loriss
give a taste of one's quality
Grenville,Sir Richard
grossy
haphazard
hike up
Hong Kong Insurance Institute
hot cathode mercury discharge lamp
hyperglycemia
iminosugars
industrial paper
iying
karyomit(e)
Lampaul-Plouarzel
line cut
little tin box
make record
mcvs
mimela testaceoviridis blanchard
minor speed
molecular norm
multilayer metallization
multivariate polynomial
negative triggering pulse
nesogaster lewisi
network element management
normal plane
Paris verticillata
payment of fee
planetary nebula symbiotic star
power device packaging
production trial
productive unit
pseudoepithecium
public confidentiality service
quartz fiber
rearrangeable switch
reclaimed rubber
rhodopterin
rob somebody of something
Róbalo, Pta.de
Sant'Andrea Apostolo dello Iónio
santalol acetate
semi-professions
single-wire feeder
small commodity producers
song-writer
stadiametric range indicator
strongly stable solution
subhemolytic
sum-and-difference net
switch-blade
tegment
telex number
theory of gene starvation
torpedo firing position
transposed operator
trapezio-
trapezohedral
trip somebody up
turbine distributor
visualization
white card
zinc oxide viscosity test