[网络] 油酰基

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(274) / 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(274) / 评论(0) 分类 探索与发现2012年

La Lsla Bonita《风光秀丽的小岛》法国首席女歌手 演唱者:Alizee 法国首席女歌手Mylene Farmer(玛莲法莫)一手打造快红新人首发主打MoiLolita荣登8大国 (法国、西班牙、意大利、德国、俄罗斯、以色

发表于:2019-01-03 / 阅读(428) / 评论(0) 分类 中英翻唱歌曲

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(304) / 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(319) / 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(299) / 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(279) / 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(321) / 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(292) / 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(279) / 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(288) / 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(368) / 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(303) / 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(338) / 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(255) / 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(312) / 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(307) / 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(330) / 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(292) / 评论(0) 分类 探索与发现2012年

By David Byrd Washington 02 May 2007 Two men who have reached the pinnacle of their boxing careers - four-time champion Floyd Mayweather, Junior and six-time champion Oscar De la Hoya of the United States - meet in Las Vegas as De la Hoya defends his

发表于:2019-02-04 / 阅读(350) / 评论(0) 分类 2007年VOA标准英语(五月)
学英语单词
acrolectal
alignment procedure
alkaline filler
artificaial fertilizer
b.ed
Barotac Nuevo
beatniks
berunsai dance (north borneo)
Borgias
branched metabolic pathway
brass flat wire
by-pass block
calcifications
Casagnes
centrifugal sanitary pump
choke flange
christ-mas
Chukotan
Cicer
circular face-mill
cochlear
code grinder
couchettes
culture symbol
d-notices
engraved copper plate printing
every month
exide accumulator
exogenous metallic inclusion
fingerplate
fishery zone
geography of language
grid neutratiore
Grossos
GUI widget
gyr.e.
habyllement
Haligonian
hard law
heavy lift derrick cargo winch
hove to
Hygrophoraceae
hypervibration
ichthyology laboratory
imperial preference system
infeed set-up
inopportunist
iodine absorber
Ky Phu
left over area
Like begets like.
lush-rolled
Mainalo Oros
Mathews-Brons-Hazebroek method
net capital gain
Nitrobacter
nuclear male sterility
oiliest
open subset
organolithium compound
Otsukimi
overlap mode
p150
Patau syndrome
pollinizes
polyester-reinforced urethane
prewet
punt
quintil
rainbow model
Rancho Quemado
recirculation ratio
rites-of-passage
rose-coloureds
RSGs
safety valve testing
Samuel Colt
Savona faience
sea rige
sechard
seismic absorption band
sex-change operation
sexual activities
Sherman, James Schoolcraft
sling hoop
smallware
space watch camera
steel tendon
striking of an arc
tater tot
Tehama County
temperature programmed work
thrust pad
triest
ultraphotomicrographs
ultrasonic washing machine
União Paulista
Vitor, R.
welded long rail
well-prized
well-testeds
yin yang