音标:[,laisəu'lesiθin] ;
n. [生化] 溶血卵磷脂

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(91) / 评论(0) 分类 探索与发现2012年

新编英语教程第五册unit07_1_dollys_false_legacy

发表于:2018-12-29 / 阅读(84) / 评论(0) 分类 新编大学英语阅读部分

Sorry,thereisnottexttemporarily,Pleasehelptingroomtolookforit! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! 汪培珽分级书单(MP3+绘本) TOP50初级英文绘本

发表于:2019-01-01 / 阅读(131) / 评论(0) 分类 动物街64号 Zoo Lane 第三季

Taliban attacks in Afghanistan rose sharply this year, underscoring the difficulty faced by the Afghan government and coalition forces trying to stamp out the persistent and deadly insurgency. But just how serious a threat does the Taliban pose to t

发表于:2019-01-09 / 阅读(132) / 评论(0) 分类 VOA标准英语2008年(九月)

Sorry,thereisnottexttemporarily,Pleasehelptingroomtolookforit! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thankyou! 爱探险的朵拉 BBC儿童动画-小猪威比

发表于:2019-01-18 / 阅读(118) / 评论(0) 分类 英语原声睡前故事

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(104) / 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(93) / 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(98) / 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(111) / 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(91) / 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(83) / 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(118) / 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

China's IPO market experienced a slump in 2012 as concerns continued over the country's slowing economy. The Shenzhen and Shanghai stock exchanges registered one hundred and fifty new listings, together raising just over one hundred billion yuan; aro

发表于:2019-02-21 / 阅读(99) / 评论(0) 分类 英闻天下

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发表于:2019-02-27 / 阅读(181) / 评论(0) 分类 粉红猪小妹第二季
学英语单词
a fine man
acremonium fusigerum
acupuncturists
aerodynamically unsupported missile
aft fuselage
Airmouse
aishanna
Alberschwende
all of a sort
alliaceous odor
AN (air natural cooled)
apomorphine hydroehloride
athwart ship force Q
auditory cartilage
axle weight
bar-mitzvah
benefits and risks
Brocas area
childhood education
Clark's Town
clear display
comma splice
commodity-driven
component system
craigmontite
crane forward
critta
daki
defoamer agent
directory access protocol
earphones
electronic probe microanalysis
family Equisetaceae
filler order number
floods in
general osteosclerosis
glandularia
grants in aid for public health
grindal
ground trainer
guard car
Guerrero, R.
gymno-colon
hangingon
helical manometer
high pressure expansion machine
Histiopteris
hohenlindens
huge scale
human placental lactogen
hydropleuritis
imprisonable
input-output statement
irrigation reservoir
isostylous
keep to something
kelsi
lapide
lasurapatite
let down heat exchanger
lg
lone-wolf
low finish
medial basal segment of lower lobe
musculus rectus capitis dorsalis
mutori
naphthionate
numeral control robot
optical camouflage
plumbing bar
popularity rating
powder flame spraying
predicator
Printer Job Language
prolegate
pump packing
quartz disk
rapid discharge rate capacity
rate-controlled step
RB (run back)
recipocating engine
resilient element
Rognedino
rusticators
satellite office
shredding of emulsion
sifting box
squirmers
superatomic
symmetric component
taper bit
template phase
termitophile
tetouan
threephase starter
ultimate density
vena colicas
weight-watchers
Winnipegosis
wolfe
yotta-
Zwicky compact galaxy