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(146) / 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(131) / 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(193) / 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(174) / 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(167) / 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(235) / 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(288) / 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(239) / 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(213) / 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(204) / 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(186) / 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(171) / 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(136) / 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(141) / 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(129) / 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(130) / 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(149) / 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(136) / 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(181) / 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(169) / 评论(0) 分类 环球英语 Spotlight
学英语单词
accrual postulate
accumulator plate
ali-esterase
allyl isorhodanate
Amsco G
anisaldehyde
arachisoil
arhinencephaly
asynchronization
bare-bum
basic objective of audit program
beam and column
bone lazy
bull noses
calcium-magnesia phosphate fertolizer
Cassilis
Castanopsis megaphylla
certainest
clitoris elongation
co-original
column jump
constant-pressure-pattern flight
conversion of array name
converted marchantman
counterdemos
cyanate
deep sea floor geology
do window shopping
draught control mechanism
eastern churches
euglycemia
flowing space
four three two one
free line condition
gene signature
Godfearers
guarantee money from employee
Gubler's paralysis
helicoidal surface
hide oneself
high-range dosimeter
hypoxias
infernities
integrated survey
investment management service
IP layer
ipronidazole
kitchenscapes
Kordofanian
Kril'onskiy Poluostrov
magnetooptic(al) switch
makena
male hypogonadism
Malleostapediopexy
methyl-stannonic acid
microprocessor control feasibility
moderation of neutrons
musets
National Environment Policy act
nonparasitized
oriented surface
orthotropic solid
outperforming
panola
pleuronectid
polythene film in agriculture
pot sweating
pre-filtering
precollagenous fiber
prosperous and strong
regional diversity
right to attend shareholder annual meetings
ring fold
Savuto, Fiume
scale line
seelie
semi-pelagians
sophisticated shooting
Special Weapons and Tactics team
specific order cost system
spensol solutions
split pattern molding machine
standard wave form
stander
stationary random sequence
subsidence
take classes in
tcam control task
telemeter transmitting set
temperature-compensated Zener diode
Trapichito
trill-trill
twin shoot
upper edge line
use the toilet
veneer rock
ventilation plan
warranted period
wbtv
well-wreathed
Wien-bridge oscilator
wrether hail