尺骨鹰嘴

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(257) / 评论(0) 分类 探索与发现2012年

Today I begin a new life. Today I shed my old skin which hath, too long, suffered the bruises of failure and the wounds of mediority. Today I am born anew and my birthplace is a vineyard where there is fruit for all. Today I will pluck grapes of wis

发表于:2018-12-05 / 阅读(418) / 评论(0) 分类 羊皮卷

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(257) / 评论(0) 分类 探索与发现2012年

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(445) / 评论(0) 分类 2006年VOA标准英语(八月)

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(286) / 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(307) / 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(283) / 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(262) / 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(297) / 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(276) / 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(254) / 评论(0) 分类 探索与发现2012年

The female retires to consider her verdict. Its hard not to feel deflated when even your best isnt good enough. The sun influences the lives in the ocean just as it does on land. Its richest parts are those where waves and currents bring fertilizing

发表于:2019-01-23 / 阅读(268) / 评论(0) 分类 探索与发现2012年

The strike of a great white shark lasts a mere second. Slowing it down forty times reveals the technique and immense strength of this massive predator. If surprise fails, there will be a chase. The shark is faster on a straight course, but it cant tu

发表于:2019-01-23 / 阅读(342) / 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(285) / 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(321) / 评论(0) 分类 探索与发现2012年

This is in Africa rarely seen, a lush water world. Some creatures are completely at home here. These are lechwe, antelope with hooves that splay widely enabling them to move at speed through the water. For others, the change is far less welcome. Babo

发表于:2019-01-23 / 阅读(240) / 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(291) / 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(292) / 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(312) / 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(269) / 评论(0) 分类 探索与发现2012年
学英语单词
abraided
Acanthus ebracteatus
alien race
all around the clock
Arseny
associated system
atmospheric radio window
be before
belt feed mechanism
bismuth(iii) sulfide
black insulating tape
boroaluminizing medium
brush box
burr wire
carmarthen (caerfyrddin)
Chagres
cheese-grater
chemical industry
classified application
Clinovir
cobalt green
color infrared photograph
decidualizations
deoxyribonuclease
economic fertility
edge work
Eucalyptus dumosa
Fahr-Volhard disease
financial flexiblity
fixed bed reactor for propylene ammoxidation
forging alloy
formation curve
freezing-tolerant plant
glinn
go screw yourself
graphic situation display
grasseaters
header brick
heel-tap tests
Heraclea
high voltage wire
integrated circuit logic
interrog.
intestinal forceps
jury-rigged
K-vitrat
Kachin State
leaf protein concentrate
Los-Alamos meson physics factory linac
manganese(iv) oxide
mechanical features
messiter
minisagas
Mira, Bukhta
mirsky-herrmann shell theory
modifier register (index register)
Morbihan, Golfe du
naphthalenol
Naphthoquine
negotiation reaching a standstill
noncherty
nonnies
orthogonal partition
particulate inorganic carbon (pic)
pegology
positional isomerism
positive infinitely variable gear box
precision annealing
probit model
pseudosplenic leukemia
pulse transmission method
rainfall meter
regiones mesogastrica
reinsurance reserve
resplendant
ripping stone
roof bolting jumbo
Schmelzer method
seed-corns
semiautomatic controlling machine
semitendinosus
simulation software program
sir john falstaffs
slack adjuster pull rod
staphylocossin
suggest themselves to
taxing body file
teillays
tespa
theatre and cinema
town-level
transrecursive
traveling autodoffer
trypomastigotes
tussled
Tyk, Zaliv
uncompensated acidosis
under-sexed
uniformity of relay protection
untwirling
working co-operative society
xpp.