极圆盘式(反射望远镜)

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(152) / 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(147) / 评论(0) 分类 2016年Scientific American(十)月

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(269) / 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(210) / 评论(0) 分类 儿童英语小故事

A:How's work today? 今天工作如何? B:It's been a crazy day today.First, I was 1-hour late,you know,the traffic is really bad,Then I got yelled by my boss. 今天可真疯狂。我先是迟到了一

发表于:2019-01-03 / 阅读(111) / 评论(0) 分类 英语抢先学

dial [5daiEl]vt. 拨(电话号码) redial重拨 dialogue[5daiElC^] (美 dialog) n. 对话 diamond [5daiEmEnd]n. 钻石,金刚石;纸牌中的方块 diary[5daiEri] n. 日记;日记

发表于:2019-01-09 / 阅读(167) / 评论(0) 分类 英文语法词汇

[00:02.71] [00:06.33]Listen to This [00:09.68]Write the number [00:12.85]1.This computer isn't working. [00:17.24]You should turn it on first! [00:20.87]2.I want to use the Internet. [00:25.15]You should ask your parents to help you. [00:29.55]3.Is t

发表于:2019-01-09 / 阅读(282) / 评论(0) 分类 北师大版小学英语六年级上

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(182) / 评论(0) 分类 Weekender

[0:0]discourage disgust disk dismiss [0:46.4036]disorder display disposal dispose

发表于:2019-01-16 / 阅读(168) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

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(145) / 评论(0) 分类 英语新闻

Well, that's not exactly the story, because the problem was that Parliament delayed and delayed releasing that data, 呵呵,但我讲述的并不是很完整的故事。因为问题在于,议会不断地拖延公布这些信息, and then they t

发表于:2019-02-13 / 阅读(137) / 评论(0) 分类 TED演讲国际问题篇

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(123) / 评论(0) 分类 环球英语 Spotlight

ROBERT SIEGEL, HOST: These days, there's very little you can't find on the World Wide Web, but we have a story now about one important piece of the Web's own history that has gone missing, and no search engine will find it. NPR's Geoff Brumfiel repor

发表于:2019-02-16 / 阅读(159) / 评论(0) 分类 英语语言学习

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(130) / 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(117) / 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(118) / 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(130) / 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(156) / 评论(0) 分类 英语新闻

PC:个人计算机Personal Computer CPU:中央处理器Central Processing Unit CPU Fan:中央处理器的散热器(Fan) MB:主机板MotherBoard RAM:内存Random Access Memory,以PC-代号划分规格,如PC-133,PC-1066,PC-2700 HDD:硬

发表于:2019-02-18 / 阅读(177) / 评论(0) 分类 实用英语

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(148) / 评论(0) 分类 环球英语 Spotlight
学英语单词
abrenunciation
air pumping
aqueous chamber
ashvin
auugs
azonic
back of the saw
backshadowing
backyardism
banded propeller
bit-cell polysilicon
brachytoma vexillum
chamberlike
choux pastries
chromospheric spicule
close steady
coat-sleeve amputation
coincident point
Corydalis verna
coticule
cross cut-off wall
Daye Formation
deliquency
demining
dizziest
doubt whether
electron spin(ning)
embowelment
extreme energy
facial diplegia
faveolate
feminizing syndrome
filter sterilized
friction sensitivity
gaytry
gilt warrant
golas
hardened wood
Harpiocephalus
honeybadgers
hospitablenesses
hum-trum
interferometer measuration system
intersectionally
kick-down limit switch
Kromy
layout design
lex-
live over (again)
long thoracic artery
m.u.l.e
magnetic scalar potential
make no disguise of
Mathurai
meskhi
mroczek
non taxable transference
nutrition problem
olsons
onomatope
ophthalmochirurgia
optical apparatus
overheads cost
pahus
palaeoarctic, Palaeoarctic
Pasym
planing mill products
power screen
prostatic abscess
public-
pulmonic plagues
quartzite glass
quick-turn
radio reconnaissance
radioisotope customer
reconstruction of external auditory canal
redisposals
roughouts
S-allele
sauntus
saw-tooth test signal
scribblings
shetlander
single bridging
single headed rail
SPROM
student-teachers
sulfobromophthalein test
sunglass
take a reading
thunder crosses
to one's feet
tundra
Tweeddale
two-dimensional recirculation flow
waffinger
wagon box
waive duty
weigh ones words
white jade
windspeeds
X-ray diagnosis