[网络] 亚油酰基

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(93) / 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(92) / 评论(0) 分类 探索与发现2012年

EXPLORATIONS - October 9, 2002: George Catlin, Part 2 By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the Special English program EXPLORATIONS. Today we pre

发表于:2019-01-02 / 阅读(109) / 评论(0) 分类 Explorations

By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. A new exhibit of paintings is being shown at the Smithsonian A

发表于:2019-01-02 / 阅读(116) / 评论(0) 分类 Explorations

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(158) / 评论(0) 分类 中英翻唱歌曲

By Paul Sisco Washington, D.C. 27 June 2007 After successful careers in the sportswear business, Doug and Kristine Tompkins set out with a passion to preserve the some of the world's last remaining wild places. Today they are among the largest landho

发表于:2019-01-13 / 阅读(160) / 评论(0) 分类 2007年VOA标准英语(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(111) / 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(106) / 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(94) / 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(99) / 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(113) / 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(92) / 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(84) / 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(92) / 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(119) / 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(85) / 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(100) / 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(101) / 评论(0) 分类 探索与发现2012年

NEW YORK, Feb. 23 (Xinhua) -- NBA upstart Jeremy Lin has applied to the U.S. Patent and Trademark Office to trademark the term Linsanity. According to the trademark regulators' website, Lin filed his application on February 13, a move that would give

发表于:2019-02-02 / 阅读(104) / 评论(0) 分类 英语新闻

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(150) / 评论(0) 分类 2007年VOA标准英语(五月)
学英语单词
accumulation hypothesis of earth
actual active power output curve
addleheaded
alleleu
anal gravy
antitetanicum serum
arsenous acid anhydride
as above
Australianise
autocutout
baby-like
bark mark
barrage-fixe
Brettice.
cable and drum drive mechanism
cellulose acetate-propionate
cholesterosis cutiss
class reptilias
coccinella
CSRM
cucurbitive
double-integration method
double-precision number(numeral)
down-escalators
drumslades
dwelling contents floater
Dzhausa
eccentric fixture
einstein-podolsky-rosen
eta particle
fire fighting hose
flux sleeve
Fulunäs
glass fibre reinforced plastic (GFRP)
Glaucium fimbrilligerum
Goddard
have other irons in the fire
hegge
high gain antenna
hollow weir
hypocytomsis
internetwork protocol
jargoneers
lip brush
lovery
Macrognathism
maintenance paint
maritime satellite communication
mastoid border
megalitre
message polling
neon-lit
Newark-on-Trent
nicholas terrace
numnahs
ochna family
original rent
orphenadrines
oscillatory shear flow
parathymosin
pincushion flower
pitch-line
Pleurozioideae
Pleurozium
positive sense class
pury
rapapport
reannouncing
respects
rhodium oxide
round rear pin type die set
ruddyless
screening capacity
self-composed
semisimple complex Lie group
show business
sintered metal filter
skim coat calender
staphylococcus enterotoxin food poisoning
submersum
subsidiary or controlled accounts
summer harbor
surface feed heater
sweat-shop
thick films
thyromimetics
tidal compensation
tip barrow
toxicodermatosis
transport number
turbofan jet
tveitasite
up to the bit
velocity coefficient of chemical reaction
vinyl sulfone dye
Wallerville
warm - up match
warning water level
Weltmann's reaction
whaling boat
wideband demodulator
yupiks