秆上生的

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(147) / 评论(0) 分类 探索与发现2012年

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(151) / 评论(0) 分类 探索与发现2012年

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(169) / 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(175) / 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(152) / 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(153) / 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(172) / 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(160) / 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(144) / 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(180) / 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(264) / 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(171) / 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(184) / 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(161) / 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(169) / 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(181) / 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(149) / 评论(0) 分类 探索与发现2012年

68 世界卫生组织呼吁加强治疗肺结核 DATE=7-16-01 TITLE=DEVELOPMENT REPORT - (1) WHO and (2) Tuberculosis BYLINE=Jill Moss (Start at 01'2

发表于:2019-01-30 / 阅读(653) / 评论(0) 分类 科技之光

Cara Dillon:她出生于1975年,来自一个爱尔兰传统音乐世家。她的声音如此清透美丽而极具风格,让观众们觉得相间恨晚。用这样一句话来形容Cara Dillon不足为过:Cara Dillon是个不寻常的天才! 14岁的时候,Cara Dillon就赢得了全爱尔兰传统歌唱比赛冠军。在开始她自己

发表于:2019-02-04 / 阅读(280) / 评论(0) 分类 音乐咖啡厅

MAPUTO, March 2 (Xinhua) -- The winners of the Mozambican Cup 2012 Liga Muculmana guaranteed on Saturday their qualification into the next phase of the Nelson Mandela Cup after beating Gabarone United from Botswana 1-0. Liga Muculmana, former champio

发表于:2019-02-17 / 阅读(209) / 评论(0) 分类 英语新闻
学英语单词
9-heptadecanecarboxylic acid
affiliate company
Americanophilia
ancient relic
asynchronous module
autonomous jurisdiction
averages
best do
bullgrader
cat's paw
cement bonding
continental crust
corynanthine
counter-notices
Degtyarevka
Devon Island
differential culculus
dimetric
direct recording facsimile
dorsal fins
drag chain conveyor
electrochemical finish
electrode weight
excitoxicity
explicit parameter
floating grade
gas-gel chromatography
gerardo
go to the bowwows
grouting(up)
guglio
Haines's reagent
herve
in consort with sb
inset cut cells
intermediate alarm wheel
iodotheobromine
isoaspartate
jetski
Kishiku
Kpankou
lancet window
lead-crystal
leonardo da vincis
line car
loudness test
magneto bracket
mail merge
Malaysia coffee
mamta
marine risk
mechanicks
Mentawai, Selat
microwave tubes
moisture-wicking
mood depression
multiple gating
natural cosecant
neural networks
normalized form
northern area
obliqueness
Oligostachyum
one literal rule
opp.
optical perfection
overfiltration
PA-93
package type steam generator
pan proof
paraffinized
phone-box
phony minefield
posttest
prior marriage
prosthesis of baggy deformity
pseudoptosis
pyropheophorbide
relaxors
right-eyed
river cow
roach-coach
rock-out
rolling strata
sand-drain process
scour protection
self-propelled thresher
single-rod piston
sodii
Soxhlet
summation of geometric progression
TDI
thyreopharyngeal muscle
tuned-amplifier
turkish dance and music
upward force
Wasgomuwa National Park
wasteyard
Waterlandian
Y select input
Yezhuga