极性薄层非均向性

Blizzardcam nearly met its match with the most playful bear it's ever encountered. The bear wanted to know how it worked. Blizzardcam deployed snowballcam as a decoy. This was the polar bears' favorite spy camera and this young male was no exception.

发表于:2018-12-03 / 阅读(79) / 评论(0) 分类 自然百科2010年

At last, there is hope. They have finally reached the pack-ice that forms the polar icecap. Its the ultimate hunting habitat for polar bears. The icecap stretches all the way to the North Pole. Seals are found wherever it meets the sea. Its been a lo

发表于:2018-12-03 / 阅读(70) / 评论(0) 分类 自然百科2010年

I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2018-12-04 / 阅读(120) / 评论(0) 分类 听一分钟英文-O

A new study has found that the Arctic's iconic polar bears are finding it harder to hunt for food due to melting sea ice caused by climate change, putting the species at a growing risk of extinction. Researchers from the United States Geological Surv

发表于:2018-12-24 / 阅读(103) / 评论(0) 分类 2018CRI中国国际广播电台

When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bea

发表于:2018-12-24 / 阅读(99) / 评论(0) 分类 2016年Scientific American(十)月

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

发表于:2018-12-29 / 阅读(153) / 评论(0) 分类 英语课程学习计划和讲义

Seventy-nine degrees north latitude is near the top, at the cold edge of the world. In the winter, when temperatures plunge below freezing, there is complete darkness at noon. During summer, the sun shines at midnight, there is no place to hide. Dang

发表于:2018-12-30 / 阅读(210) / 评论(0) 分类 国家地理2007年

She worries a lot. She worries about polar bears. They are big, white bears. They live in the north. They need snow. They need ice. They need cold weather. There is too much pollution. Pollution heats up the Earth. Heat melts the ice. The ice is the

发表于:2018-12-31 / 阅读(146) / 评论(0) 分类 儿童英语小故事

Section 29 Global Warming Some people say the earth is getting warmer. They blame something called greenhouse gasses. The greenhouse gasses destroy the higher atmosphere that keeps our planet from get

发表于:2019-01-02 / 阅读(146) / 评论(0) 分类 英语导读1000句

BBC Learning English Weekender Polar Explorer Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. In Weekender today, we listen to an interview with explorer, Rosie Stancer. In March, Rosie sets off on her latest expedition walki

发表于:2019-01-16 / 阅读(121) / 评论(0) 分类 Weekender

I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2019-01-21 / 阅读(120) / 评论(0) 分类 纯正英语一分钟

STOCKHOLM, May 8 (Xinhua) -- The 2012 Swedish Polar Music Prize was awarded to the American singer-songwriter Paul Simon and the Chinese American cellist Yo-Yo Ma, the prize committee said in a statement on Tuesday. For five decades, Paul Simon has b

发表于:2019-02-09 / 阅读(85) / 评论(0) 分类 英语新闻

Voice 1 Thank you for joining us for todays Spotlight. Im Rebekah Schipper. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Sib

发表于:2019-02-14 / 阅读(77) / 评论(0) 分类 环球英语 Spotlight

The dogsled skimmed silently over the frozentundra. The seal hunter ran alongside it. Sometimeshe cracked his whip against the ice. The snowdrifts looked like giant white sculptures asthe sun slipped behind the frozen hills. Then a fullorange moon ro

发表于:2019-02-17 / 阅读(90) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

The dogs were barking wildly at two smallcreatures playing in the moonlight. Polar bear babies! cried Annie. One roly-poly cub leaped onto the other. Then theyboth rolled through the snow. Hi, little bears! Annie called. The cubs jumped up and shook

发表于:2019-02-17 / 阅读(68) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

The cubs whimpered louder. They want to go to her, but they're afraid of theice, whispered Jack. Annie petted the cubs. Don't be afraid, she told them. You'll get back toyour mother.The big polar bear growled. She paced back andforth, sniffing the ai

发表于:2019-02-17 / 阅读(75) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

Jack, you can get up now, said Annie. Jack opened his eyes. Annie was standing over him. She still had her mask on. We're on safe ground, she said. Jack felt as if he'd been dreaming. He lookedaround. They had reached the tundra at the edge ofthe fro

发表于:2019-02-17 / 阅读(77) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

Now only the moon shone on the snow. Jack looked around for the polar bear. She was gone. Where'd she go? asked Annie. I don't know, said Jack. He looked over thetundra. There was no sign of the giant bear or hercubs. Maybe she's not interested in sc

发表于:2019-02-17 / 阅读(71) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday. Both the new icebreaker and Xuelong (Snow Dragon), an icebreaker that operated in Antarctica,

发表于:2019-02-18 / 阅读(91) / 评论(0) 分类 英语新闻

Voice 1 Hello, Im Marina Santee. Voice 2 And Im Ruby Jones. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 A tall man stands s

发表于:2019-02-21 / 阅读(93) / 评论(0) 分类 环球英语 Spotlight
学英语单词
-edema
-ser
401(K)
absolute idiosyncrasy
account book paper
agdes
ahmads
altitude performance
assembly language symbolic debug
augment link
automatic driller, automatic drilling control unit
bedrops
bichu fibre
birdbox
Buckingham's equation
butterwort
can goods
canella family
cash-deposiit ratio
charlie l.
chartreusest
chlorines
cold-prass oil
coroutines
Croatian Sheepdog
crossed grid
cylindricality
depassivator
diaphragm amplifier
digit by digit method
documentary decision
dry running
Dur. dolor.
eagle-eye
ex turpi causa non oritur actio
gluers
Hassler method
heathery
high property
high-sulfur steel
Ignatian
injury of penis
interrupt function enable
irrumation
isadelpous
joint tool
joint undertaking
kam tap screen
L.C.L.
lackmus
Laupheim
Leonard Constant Lambert
linneberg
liquid spring
maintenance of free trade
may bugs
meat loaf stuffer
medical diagnosis on death
metallifacture
microanalytic research
Millettia dielsiana
moral-sentimentalism
mugo pine
MySpacers
natica
NPI (Nuclear power International)
orthoscope
Paroho
petroleum refinery distillation capacity
phase transiens
polymorphid
PPSR
pronotal bristle line
psychic reaction
ptereleotris zebra
Quenya
quotation request
rabbit fevers
Rayleigh scatter
receive/send keyboard set
reversed tainter valve
sparkful
specific adhesion
structuring data design
tashia
the national dance society of china
thermal conduction per unit area
Titano-lavenite
Transport Layer Interface
trashery
trichomonads
tricorders
tropologizing
trusses up
two color thermometer
underviewer
universal mixer
uridylate
valley migration
wage and salary administration
YSIGA