[医] 磺胺乙基噻二唑

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(121) / 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(123) / 评论(0) 分类 探索与发现2012年

Christmas Celebrated AZUZ: And of course, Christians around the world celebrated Christmas on December 25th, marking the birth of Jesus. One of those celebrations, which you see right here, was held in the city of Bethlehem, the site where Jesus was

发表于:2019-01-08 / 阅读(416) / 评论(0) 分类 CNN2010年(一)月

By Alisha Ryu Nairobi 24 September 2007 The spokesman for the new Eritrea-based Somali opposition alliance tells VOA that the group's Islamist-led forces are in an all-out war against Ethiopian troops in Somalia in a bid to oust the Ethiopians from t

发表于:2019-01-13 / 阅读(215) / 评论(0) 分类 2007年VOA标准英语(九月)

By Al Pessin Pentagon 23 January 2008 A senior U.S. commander in Afghanistan says Taliban and al-Qaida forces in the Pakistan border area are turning their attention more toward Pakistan, and are working together to hit Pakistani forces. Major Genera

发表于:2019-01-13 / 阅读(167) / 评论(0) 分类 VOA标准英语2008年(一月)

The faithful have flocked to the West Bank town of Bethlehem to celebrate Christmas. Christians gather on Christmas Day inside the Church of Nativity, believed by many to be the birthplace of Jesus Christ, in the West Bank town of Bethlehem, Thursda

发表于:2019-01-13 / 阅读(163) / 评论(0) 分类 VOA标准英语2008年(十二月)

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(142) / 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(141) / 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(129) / 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(126) / 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(142) / 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(124) / 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(114) / 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(234) / 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(127) / 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(150) / 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(122) / 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(134) / 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(138) / 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(118) / 评论(0) 分类 探索与发现2012年
学英语单词
absolute advance
anodic dissolution
antiphotodamage
arriccios
at symbols
atj
bad hair days
balloon knot
Baramati
Bilyarsk
budget preparation
bugbeared
Burner Nozzles
cadmium acetate
caloric restriction
carruss
cascaded transistor amplifier
caveat lector
composition motor
de facto corporation
decalcified bone matrix
defensive structures
deoxycytidylate
deposeth
direct product of topological groups
doggart
Doyley.
Dutch West India Company
ERMI
Esculapius
expending
Falodus
flame spray
flating crane
galvanized welded wire mesh
gardesanas
genatasinus
generalization item
hinlopenstretet (hinlopen str.)
hisashi
incidental fee tariff
intervenest
isoelectronic molecules
IVAA
lanmuchangite
line interval
lip-mike
machineman
maincrop
mean continuity
Micah
MICTOR
Mountbatten, Louis (Francis Albert Victor Nicholas)
negative assembly
nephronectin
neutralizing mechanism
non-Witness
nonproductive cough
north eastern
Norwegian Patent
nully
OAAD
oral erythroplakia
paramyxine fernholmi
plasto hydro dynamic lubrication
Polillo Str.
Qui-Lea
reciprocity calibration
red clause
reduced homology group
rendels
reversal-stress member
rib for base
Schaefferstown
scour outlet channel
screw differential
Scrophularia macrocarpa
second scale step
segmental toothed plate
self-colour
self-devotedly
setaria italica
single signal location
slotted blade
standard tuning frequency
steam quenching
storage-precipitation gauge
strike against
stripped leaf
sun-and-planet gearing
swarter
systema skeletale
tapped heater
thank of
undried
uprushing
vehiculation
velum medullare anterius
vibro-screen
voucher plan
which came first, the chicken or the egg?
xerotes