异亮氨酰(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(127) / 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(131) / 评论(0) 分类 探索与发现2012年

By Anya Ardayeva Moscow 25 April 2006 watch Chernobyl Site report Twenty years ago on April 26, 1986, a massive blast at the Chernobyl Nuclear Plant sent a cloud of radioactivity across Europe, affect

发表于:2019-01-09 / 阅读(243) / 评论(0) 分类 2006年VOA标准英语(四月)

一个挪威的喜剧演员二人组,他们主持的脱口秀电视节目在挪威本地有不少忠实观众,而《狐狸叫》原本是他们为了宣传新一季节目开播而制作的宣传歌曲。这首歌犹如童谣的歌词注定了它的

发表于:2019-01-10 / 阅读(537) / 评论(0) 分类 英乐时空

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(150) / 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(150) / 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(135) / 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(132) / 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(146) / 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(133) / 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(122) / 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(242) / 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(138) / 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(161) / 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(129) / 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(140) / 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(148) / 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(124) / 评论(0) 分类 探索与发现2012年

By Jim Teeple Jerusalem 17 January 2006 Israel's acting prime minister, Ehud Olmert on Tuesday warned that Israel will not tolerate a nuclear armed Iran. Mr. Olmert also says he hopes to get Israeli-P

发表于:2019-02-07 / 阅读(222) / 评论(0) 分类 2006年VOA标准英语(一月)

1) G2G = got to go = 我得走了 2) TTYL = talk to you later = 一会儿再聊 3) XOXO 亲亲抱抱

发表于:2019-02-07 / 阅读(316) / 评论(0) 分类 OMG美语
学英语单词
aleconner
amyl isorhodanide
Antiguide
anxious class
aperientia
archebacteria
automatic device framework
biolabeling
bismuth gingivitis
Brandt's treatment
bruise along
buccal tablet
Butterley
caloneis consimilis
Charlier check
Chinese drugs for snakebite
civil days
classification of pulmonary tuberculosis
craps
creophagous
cursour
DC relay
denaturation
Dilgacetinin
downstroy
Dutch West Indies
ellucidate
enum-type
estimating water potential
fiberglass reinforced polyester resin
fibrous mor
first order rate process
full sleeve
gardnap
glass fiber covered wire
Gravia
grease launching
growth stress
high-frequency induction
hypomuscular segment
hypophoria
icterus
Iditarod Trail Dog Sled Race
IL-7
inverse piezoelectric effect
iodopovidone
killin' it
knockstones
laser wave length
leave someone to to sink or swim
limiting adjective
limonia (goniodineura) nigriceps
loquacity
Malvastrum coromandelianum
mercury pool
meter board
methylatropine
Nam Ly
nettleman
next magazine
nonproprietary name
normal current
Obephen
oligoene
paper delivery
Plasmodium schwetzi
pointbypoint
pointjunction
polyamidohygrostrepton
potato apple
prewett
propulsion quality
putty up
racemethionine
rescue basket
rubber baby buggy bumpers
Saccharomycetacea
Scorzonera inconspicua
septa mediastinale
setariae fructus germinatus
sex-linked recessive hereditary disease
skin redness
skinnies
soaries
Stephania sutchuenensis
succus prostaticus
supraoptic canal
taboons
takievia
teacher evaluation
telangiectatic lipoma
theory of foundation of mathematics
to scam
tonic wind
variable speed drive device
virtual declarator
wampold
wash board
Webb, Cape
wrj
Yekaterinodar
yepez