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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(73) / 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(77) / 评论(0) 分类 探索与发现2012年

2014足球世界杯主题曲《We Are One》 中英歌词,2014年世界杯就要打响了,官方推出了《W e Are One》世界杯主题曲,这是一首激烈烘托绿茵场热闹氛围的歌,是提前放风为世界杯造势的歌曲;而真正

发表于:2019-01-10 / 阅读(85) / 评论(0) 分类 英乐时空

Making New Friends, Keeping Old Ones at Ole Miss EDITOR'S NOTE: This story is part of a series about international student life at colleges and universities across the U.S. Please join us over the next several weeks as we bring you stories about thes

发表于:2019-01-12 / 阅读(83) / 评论(0) 分类 2016年VOA慢速英语(六)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(83) / 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(90) / 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(77) / 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(78) / 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(97) / 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(72) / 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(67) / 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(103) / 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(187) / 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(68) / 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(101) / 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(53) / 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(64) / 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(74) / 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(76) / 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(66) / 评论(0) 分类 探索与发现2012年
学英语单词
achatum
acrasias
aimo
anidulafungin
armor-piercing sabot
azidoglycosides
bacterial analysis
Bathonian series
bone tar pitch
Brandesburton
camomile oil
cicbs
circumvention
cooling crystallizer
cost engineer
costae ventrales
could hear a pin fall
countermanders
depoliticises
draw a line
duplicative inversion
educational innovation
electric microbalance
excaliburs
extended slide valve rod
fantail mullet
farcinia
festilogies
file cost
flat twin cable
genius at work
get a dressing down
good-me personification
hanon
hemitropal
Histagolin
image understanding system
imperfect stamen
in one's early teens
inbounder
incommunicableness
infrared reflow soldering
intervarietal free cross-pollination
intrusionist
juring
Kaarta
khail
leuco vat dye
Ligularia achyrotricha
lodranite
lonchar
mandles
Maplewell beds
Martonyi
Master in Business Administration
medium moor peat
melodramatized
metal bead
mindsight
mortgage-finance
motor module
music composition
nonexclusivity
notice of readiness to load
O'Hara, John Henry
obligatory terminal close juncture
on-line measurement
operation process
ophioglossum vulgatum l.
paediatric diagnostics
passero capes
Pitcairn I.
plantation system
pollen sensitivity
poulard wheat
pretty nearly
priority class of traffic
progressive block welding sequence
prohibition of exploitation
ratio of notes payable to accounts payable
rectangular mapping
Salmonella amager
static dispatch
submerged telephone repeater
sulfonamide
SYSTEM directory
template leveling system
tensometer
toe dances
transaction oriented output
triplet theory
tuned
TV child
Utricularia macrorhiza
vadstenas
velocity field
vena iliolumbalis
vertical stereotriangulation
waylayings
wemysses
wheint
whole-math