磷偏析

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松(松树)制成, 在液体的石蜡

发表于:2018-12-18 / 阅读(192) / 评论(0) 分类 英国学生科学读本

Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢

发表于:2018-12-18 / 阅读(163) / 评论(0) 分类 2018年NPR美国国家公共电台2月

Unit 80 Civil Rights Movement against Segregation in the US During and after World War II, challenges to segregation became more common and more successful. Three major factors accounted for this: -- The Great Migration The great migration was the mo

发表于:2018-12-30 / 阅读(184) / 评论(0) 分类 英语流行话题阅读:语境识词4500

迈克尔.杰克逊:They Don't Care About Us they Don't Care About Us 他们不在乎我们 skin head dead head everybody gone bad 人面兽心、行尸走肉,所有人都变坏了 situation speculation everybody allegation见风使舵、投机倒把

发表于:2019-01-03 / 阅读(203) / 评论(0) 分类 迈克尔杰克逊经典歌曲

This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R

发表于:2019-01-08 / 阅读(201) / 评论(0) 分类 Scientific American(十二)月

This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that

发表于:2019-01-11 / 阅读(258) / 评论(0) 分类 VOA慢速英语2008年(八)月

Should Offensive Place Names Be Changed? Hundreds of places across the U.S. use the word squaw, including Squaw Creek, Squaw Flat, Squaw Meadows and Squaw Springs, for example. In 1960, the Winter Olympics took place in a ski area called Squaw Valley

发表于:2019-01-12 / 阅读(181) / 评论(0) 分类 2016年VOA慢速英语(六)月

By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce

发表于:2019-01-12 / 阅读(197) / 评论(0) 分类 2007年VOA标准英语(七月)

Alumni work to save buildings designed to educate rural African Americans Susan Logue Koster | Dillwyn, VA 25 February 2010 Watch: Logue Koster Report MP4 Wilbert Dean was moved to save his school when he saw it was being used as a trash dump. Relate

发表于:2019-01-13 / 阅读(177) / 评论(0) 分类 VOA标准英语2010年(二月)

RACHEL MARTIN, HOST: As Americans, we are bound by a collective identity. We see ourselves as independent change makers. We invent things. And we can reinvent ourselves. But that innovation, that desire to keep changing has gone away. That's the cent

发表于:2019-01-16 / 阅读(194) / 评论(0) 分类 2017年NPR美国国家公共电台3月

MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w

发表于:2019-01-17 / 阅读(195) / 评论(0) 分类 2018年NPR美国国家公共电台7月

模仿文本: 50 years ago on May 2nd, 1963, racial tensions in the US city of Birmingham, Alabama reached the peak when thousands of black schoolchildren took to the streets to protest against segregation. It became known as the Children's Crusade

发表于:2019-01-24 / 阅读(212) / 评论(0) 分类 英音模仿秀

The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor

发表于:2019-01-29 / 阅读(183) / 评论(0) 分类 万物简史

Once a man had a dream.He dreamed of a land of peace and harmony.He dreamed of a place where people were not judged by their skin color.He dreamed of a country where children of different races could play together.He dreamed of a nation where all peo

发表于:2019-02-02 / 阅读(155) / 评论(0) 分类 英美文化

Troubling Times 令人不安的时代 At the conclusion of this last political election (ending with my beloved country being more divided than ever) a friend wrote me a letter sharing her fears and concerns for the future. She ended it with this sen

发表于:2019-02-07 / 阅读(159) / 评论(0) 分类 趣味英语

Domestic work in the South 美国南方的家务 The Help, updated 升级的帮佣 Maids are no longer servants 帮佣不再是仆人 UNDER segregation, black women were so rigidly excluded from good jobs that 60% of those who were employed in 1940 w

发表于:2019-02-17 / 阅读(193) / 评论(0) 分类 经济学人文艺系列

It's reported that tickets for Shanghai Disneyland have been booked-out for the first 2 weeks after the theme park opens to the public next month. 据报道,上海迪士尼乐园下个月正式开园之后的头两周门票,如今早已被预定一

发表于:2019-02-17 / 阅读(281) / 评论(0) 分类 阅读空间

Peeing at work has traditionally been a segregated business. 传统上,在工作场所如厕存在着一种隔离。 In the old days, directors relieved themselves in different, swishier places from the rank and file. 过去,董事们有自己单独

发表于:2019-02-18 / 阅读(153) / 评论(0) 分类 英语新闻

Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche

发表于:2019-02-26 / 阅读(197) / 评论(0) 分类 英语听力文摘 English Digest

Books and Arts; Book Review; 文艺;书评; Segregation in cities 城市里的种族隔离 Living in black and white 黑白时代 How different races inhabit cities 不同的种族如何共居于城市 Segregation: A Global History of Divided Cit

发表于:2019-03-09 / 阅读(270) / 评论(0) 分类 经济学人综合
学英语单词
academic hood
actholain
anakatesthesia
antiposia
availment
baffle plate type separator
be on skid row
beebob
bimucous fistula
bubble under
caa'ing whale
centre drift
cerebro-oculo-facial-skeletal
charcher
chromoendoscopies
circle sector
class-d channel
compaction of file records
compatibility equation
contraception rate
cynthia roretzi
danger cargo
dehumidification
drug enforcement agencies
drug resistant strain
duff up
equilibrous
Erigeron petiolaris
final assembly schedule(fas)
fine concrete
flat rubber strip
foresets
gatel
ghostball
ground water system
grumbler
heating technique
heredodegenerative disease
hexagrammes
high-wash syrup
Hizmet
hot-head
hovelson
i-worsed
insulating washer
interfaculty
interior paragraph
julier
kastaby
Kennedy, Joseph Patrick
Kluang
lairages
laser optoacoustic detector
Lestidium
line deletion
litho-blue ink
loaded governor
manual typewriter
misplacement
mother instinct
Myoscint
net plane of lattice
nigga moment
non-education
on-line data acquisition
order Dinoflagellata
paint streaming
papillomas
pectinatory
Perusia
policy memorandum
pre war
preliminary figure
pseudotriangulations
Radio range finding.
red sweat
republics of panama
safety cord
sarkisians
saurels
sharp reduction
silver gauze
software audit
Stannard
stomachy
strip mine
t-group(training grop)
Talca, Pta.
tax withholding certifate
Theinheim
theoretical
underforcast
uphiller
Ursocyclin
VBMD
ventricular band
vertical feed
vertical industrial linkage
visual synthesis of colour
widcard character
with a blow
youthocracy