n. 氯下甲咪唑

发表于:2018-12-02 / 阅读(171) / 评论(0) 分类 英语口语1+1

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(113) / 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(116) / 评论(0) 分类 探索与发现2012年

Cloze: Stingers of the Sea 海中刺客 ── 水母 Given impressive-sounding names like Portuguese man-of-war, jellyfish are certainly respected and feared by humans. Not exactly a fish, and lacking a spine, this creature has a single body cavity

发表于:2019-01-02 / 阅读(132) / 评论(0) 分类 双语有声阅读

By Jim Teeple Ramallah 23 January 2006 Politicians in the Palestinian territories wrapped up final day of campaigning Monday, ahead of crucial vote Wednesday to elect new legislature Politicians in th

发表于:2019-01-13 / 阅读(224) / 评论(0) 分类 2006年VOA标准英语(一月)

Azaz Residents Pick Up After Aerial Bombings The residents of Azaz clean up and mourn after Wednesday's deadly bombing by Syrian government warplanes. Azaz had been peaceful in recent months, although forces of the rebel Free Syrian Army have had to

发表于:2019-01-13 / 阅读(143) / 评论(0) 分类 VOA标准英语2012年(八月)

Oum Sok began working as a cyclo driver when he was 18. He says the city has become very expensive over the years, making it much harder to earn a living. New York has its yellow cab. London has its red bus. But Phnom Penh has its cyclo - a three-whe

发表于:2019-01-13 / 阅读(168) / 评论(0) 分类 VOA标准英语2010年(六)月

The State Department said Thursday an agreement for the start of direct peace talks between Israel and the Palestinians is close to completion. The deal will apparently be sealed by statements from the United States and the International Middle East

发表于:2019-01-13 / 阅读(125) / 评论(0) 分类 VOA标准英语2010年(八)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(136) / 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(128) / 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(118) / 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(120) / 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(133) / 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(115) / 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(105) / 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(119) / 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(145) / 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(108) / 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(128) / 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(129) / 评论(0) 分类 探索与发现2012年
学英语单词
abstract verb
alpha-Heparin
angular coordinate
ball and socket hinge
be painted
boomout
Cis-Diaminodichloroplatin
computer based training
conjunctival corpuscle
cooling water treatment
cytofertilizin
dead-beat adaptive control
demicyclic
descendiblity
diagonalizable
diaphragm jig
diazotiza tion
dielectric strength test
directorate general of post
ecsoft
entertainment-industry
epiperipheral feeling
extrapolated leading edge
follicostatin
front disc brake
gas-solid interface
Gascogne, G.de
genus indigoferas
goldsher
granuloma inguinales
grooving of rolls
guber
hardware unit
hole rat
impieties
inrighteous
interest covering ratio
introducing of technology from abroad
invoking function
inworn
iodid flux
isotonic eye solution
L-Asnas
licensed band
lined ring
lipreadings
mccormally
meryhed
mesocolic band
Misungwi
moisture sensor
molal specific heat
Motozintla
multi national enterprise
musculus deflector pinn. caud. superfic. ventr.
non-chemicals
nonsteady motion
nurseryfishes
order of adducing
organoleptic investigaation
pamoic acid
photoelectrographs
piedmont plain
plumnose
polypodium transpiananense yamam.
positive number
pouilly-fuisse
preselected stop
pressure flush valve
pressure tube anemometer
propeller stirrer
puzzolan
quasi-geostrophic potential vorticity equation
Quebemycin
Radomyshl'
rain off
rated current of switch
redshort
region of prognosis
regional approach
regional inequality
resolves
Rhomotoxine
Round Rock
ruby ranging laser
rule language
sacietie
secondary virginity
Simmons' citrate agar
space case
sparsely foliated umbrella
spiral vortex
stomium
streetballer
system voltage stabilizer
thiocyano dyestuffs
train graph pen
Trisol
Walt Disney World
wedgeworth
working in the vicinity of live part
Zingiber mioga Rose