[化] 非极性化合物

Grammar Girl here. Todays topic is the complex-compound sentence. Guest writer Sal Glynn writes: Most writers worth their fingertip calluses begin as avid readers. We read books, magazines, and websites indiscriminately until we start to notice the w

发表于:2018-12-07 / 阅读(218) / 评论(0) 分类 英语语法 Grammar Girl

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(182) / 评论(0) 分类 2018CRI中国国际广播电台

Intonation can indicate completely different meanings for otherwise similar words or phrases. For example, an English teacher teaches English, but an English teacher is from England; French class is where you study French, but French class is Gallic

发表于:2018-12-27 / 阅读(159) / 评论(0) 分类 美式英语正音训练

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(302) / 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(255) / 评论(0) 分类 儿童英语小故事

AGRICULTURE REPORT - Scientists Find Compound in Smoke that Helps Seeds Grow By Mario Ritter Broadcast: Tuesday, July 20, 2004 This is Steve Ember with the VOA Special English Agriculture Report. A di

发表于:2019-01-11 / 阅读(202) / 评论(0) 分类 农业与发展

1. The Pentagon says the US has fired missiles on Libyan air defenses. French warplanes have also taken part in enforcing a no-fly zone over Libya. This comes after Libyan forces continue their assault on rebel-held position. 2. Japan's government sa

发表于:2019-01-11 / 阅读(188) / 评论(0) 分类 美联社新闻一分钟2011(三月)

The United Nation's World Food Program says rogue members of Somalia's extremist al-Shabab group attempted to raid its compound late Sunday in the Somali town of Wajid, about 300 kilometers northwest of Mogadishu. World Food Program spokesman, Peter

发表于:2019-01-14 / 阅读(234) / 评论(0) 分类 VOA标准英语2009年(八月)

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(217) / 评论(0) 分类 Weekender

What do these five words have in common: hotdog, fireworks, well-being, waistline, sunset and ice cream? They could all describe a fun holiday celebration. For example: My holiday was wonderful! I went to a friends party and we laughed, ate and had a

发表于:2019-01-21 / 阅读(252) / 评论(0) 分类 2018年VOA慢速英语(十二)月

By Elizabeth Carlassare. Todays topic is compound interest. Albert Einstein is often quoted as having said something to the effect that compound interest is the greatest wonder of the universe. Its an urban legend, but it packs some punch! In todays

发表于:2019-01-30 / 阅读(233) / 评论(0) 分类 货币英语

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(188) / 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(149) / 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(151) / 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(143) / 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(138) / 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(158) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

ISLAMABAD, Feb. 25 (Xinhua) -- The living compound of the former al-Qaida chief Osama bin Laden in Pakistan's northwest city of Abbottabad is being demolished, said one local media report. Local Urdu TV channel Express said that the front part of bin

发表于:2019-02-18 / 阅读(167) / 评论(0) 分类 英语新闻

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(196) / 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(179) / 评论(0) 分类 环球英语 Spotlight
学英语单词
A-Hi
Abbe numbers
advancing years
age profile
ammonium soil
antiphase dynamics
bimboy
biological vector
Birnin-Kebbi
body scrub
bourgognes
break-over rope
bump-mapped
by-tale
c.h
cathode cation caver
cell growth monitor
Charsznica
chicken pot pie
cholinesterase nevus
colloverthwart
complete lattice
compound the felony
coolant storage system
countermine operation
Davis Sill
depletion percentage
digenous
directional lobe
disconcerting
dizard
general cashier
halcrows
Highworth
hot shears
image-frequency interference
ingestive
integrated operating system
interdigital cyst
intra-striatus
inverted amplifier circuit
it falls to someone's lot to do something
jack-in method
japonolaeops dentatus
javellization
khameneh'i
Kuntair
light-reflecting
liguliformcolulus
lizard orchids
lognormality
lute(in)oma
meec
microsphaera izuensis
Microsporea
millimicron (m?)
murguia
newborn baby
nitrogen pulse laser
obstruction of lacrimal canaliculus
paganisation
peek at
phragmacone
poly a0 f eucaryotic mrna
poly(ethylene oxide)
pretty soft
rat typhuss
relief pattern
rhaphoneis calcaravis
rhoddon
Robertsonian
rupture of uterus
Sacagawea
sacreligious
salmon-coloured
seaborne only
secondary x-ray
slide-back voltage
spectrum types
spore fruit
St-Germain-Laval
standard jig
standardization equipment
standby valve
suboccipital cisternal puncture
supposable
tear the guts out of something
terlecki
Tetragonurus
to put it baldly
tough plastic clay
transmission line corridor
ugubu (south africa)
underwater sound test tank
uniate
unspouselike
vacuolar degeneration of odonto-blastic layer
vavoom
Viski
waalhaven
wildcrafting
zeilberger