褐磷钛钠矿

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(214) / 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(217) / 评论(0) 分类 探索与发现2012年

crocodile tears sob story 大家知道,眼泪的英文字就是tears。英文里有一个说法,叫做:crocodile tears。 Crocodile就是鳄鱼。Crocodile tears和中国人常说的

发表于:2019-01-10 / 阅读(353) / 评论(0) 分类 美国习惯用语

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(244) / 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(256) / 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(233) / 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(222) / 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(248) / 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(229) / 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(208) / 评论(0) 分类 探索与发现2012年

The female retires to consider her verdict. Its hard not to feel deflated when even your best isnt good enough. The sun influences the lives in the ocean just as it does on land. Its richest parts are those where waves and currents bring fertilizing

发表于:2019-01-23 / 阅读(237) / 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(301) / 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(239) / 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(268) / 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(244) / 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(249) / 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(259) / 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(229) / 评论(0) 分类 探索与发现2012年

我们上次讲了两个由story这个词组成的习惯用语。一个是cock and bull story,意思是虚构不实的托词。另一个是cover story,解释掩盖真相的假话。我们今天还要讲几个带有story这个词的习惯用语。第

发表于:2019-02-18 / 阅读(272) / 评论(0) 分类 美国习惯用语

[Intro] Oh, oh, oh, oh, oh, oh, oh, oh Oh, oh, oh, oh, oh, oh, oh, oh [Verse 1] Arrte un instant, coute-moi La vie que tu cherches n'existe pas L'amour est trs fort, sauve ton coeur Il meurt, il meurt oh oh oh oh [Verse 2] Looks strikes I got them ge

发表于:2019-02-20 / 阅读(299) / 评论(0) 分类 英语热力歌曲
学英语单词
18-hydroxy-11-deoxycorticosterone
acrylic water-soluble transparent baking paint
Adak Canyon
aholeholes
anglophones
antigeny
apatosauruses
back-pocket
Ballater
beegs
bone seeking alpha emitter
boscobel
botryoidaltissue
branch line winder
butterfly bush
cable-coiling drum
Chocoy
chromatophile
circumcentres
close shearing
coefficient of freight traffic
coiled coil filament
crossplayers
dambrod
dashedly
direct driven shears
ecbasis
ejectile
emergency static pressure source
employee insurance
enwheel
Ercis
finished-product stock control
Fire Detection Alarm Systems
five day report
give the lie to sth
Gomphostemma
growth hormone releasing factor
ice jeans
immunodot
intrinsic equation of a space curve
irreducible algebraic family
keedon
kingdom Prokaryotae
labilised
level spacing
lord george gordon
Luis Bunuel
maasen
mbers
Mishmis
molecular layer
Nancy Lee
nematalosa japonica
nonterrorists
north-easterners
octiles
operational item
organic nitrogen fertilizer
oyther
pan wire
photogenicorgan
pitch-angle scattering
podagrical
precision stereoplotter mapping
produs
pyrocatechin monoacetate
recreolizing
reference culture
resort hotel
Reston, James Barrett
roehrkasse
Roig, C.
rope lug
rubroskyrin
sigils
slash pines
smellless
soil consistency
starve for
stink fingers
stress relief method
strict-sense stationary series
sub contracting
theoretical electrochemistry
tiffins
toolkit without an interesting name
tough-guyness
transfer trolley
trichophytobezoar
twice-exceptional
velocity constraint
ventoseness
verisms
voluntas ordinata
Vorbasse
water rice
weakening of the mind
whirlpool tank
Zelënodol'sk
zenography
zewails