[化] 二亚油精; 甘油二亚油酸酯

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(114) / 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

To daffodils Fair daffodils,we weep to see you haste away so soon; as yet the early-rising sun has not attain'd his noon. Stay,stay, until the hasting day has run but to the even-song; and,having pray'd together, we will go with you along. We

发表于:2018-12-31 / 阅读(200) / 评论(0) 分类 英语名著名段背诵精华

To Daffodils Robert Herrick Fair daffodils, we weep to see You haste away so soon; As yet the early-rising sun Has not attained his noon. Stay, stay, Until the hasting day Has run But to the even-song; And, having prays together, we Will go with you

发表于:2019-01-02 / 阅读(133) / 评论(0) 分类 精美英文欣赏

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(129) / 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 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(228) / 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

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(110) / 评论(0) 分类 探索与发现2012年

LOS ANGELES, Aug. 24 (Xinhua) -- Frank DiLeo, the late King of Pop Michael Jackson's former manager during the 1980s, has died at his home in eastern Ohio Wednesday. He was 63. The music industry veteran, who was often seen toting a cigar, passed awa

发表于:2019-02-02 / 阅读(146) / 评论(0) 分类 英语新闻

20 To Daffodils Robert Herrick Fair daffodils, we weep to see You haste away so soon; As yet the early-rising sun Has not attained his noon. Stay, stay, Until the hasting day Has run But to the even-song; And, having prays together, we Will go with

发表于:2019-02-03 / 阅读(178) / 评论(0) 分类 希望长着翅膀
学英语单词
Accelerator Key
air-cooling
altazimuth instrument
analytically normal local ring
annexions
aphrophoras
arithmetic-logic
astronomical orientation
azepines
baconless
basic point defense missile system
Bourcefranc-le-Chapus
cappy-hole
carburretion
carpenters flat chisel
centre fixture
chemical liver poisoning
collapsing ratio
cone centre
creditress
critical capsizing moment
direct bromination
electromagnet assembly
emesses
erupturive
erythema infectiosum
eternalization
ethylbromide
extreme views
fada
fast idle
Feleki's instrument
final injunctions
fish-catching
floor piano
frequency-modulated transmitter
gadding car
gas gain
gereffis
giorgiosite
Grindelia robusta
hippeastrum equestre
holomorph(e)
horizontal bed
hyperbaric pressure
Indian blanket
induced probability measures
instruction decoding by control processor
isofenchol
Jubilee, Year of
kedleston
knifer
last-in first-out method
line-to-line basis
Lophiodonidae
M-regulator
marinho
methyl tolyl ether
metre full scale
misdriven
moment area
motene
muleloads
neoscona vigilans
obligation establishing joint and several
opportunistically
overbasic
partially computable
Pedicularis proboscidea
peripheral chromatin
pesatori
powder sample plate
prosecutorships
puddle mixer
Pulkovo Observatory
put a match to
Quakerizing
rat rods
rhyacophila furcata
rtu
saddle-point
semiconductor ignition device
shared slot
shotokai
silnylon
specific deposit
stannaries
Stizidae
system identifier
thickness of printing paste
TKP
tortuosity
true no-par value stock
tumor virus
tunica conjunctiva palpebrarums
vesicula seminalis
video signal detection counter
vv. palpebrales superiores
wave and tide gauge
wedge brick
young terror
zap rays