钛斜硅镁石(钛橄榄石)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. This will just take a minute. Youve probably chased a fly or two around the house this summer. And, chances are, it took a few swings before you brought down the buzzing nuisance.

发表于:2018-12-02 / 阅读(96) / 评论(0) 分类 Scientific American(八)月

Being an American, Donna wants to learn more about the Chinese. She's talking to her Chinese friend, Jeff. D: Hi, Jeff! What's up? J: Nothing much. What about you? D: Same as usual. Here, have a stick

发表于:2018-12-08 / 阅读(295) / 评论(0) 分类 赖世雄中级美国英语

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2018-12-12 / 阅读(127) / 评论(0) 分类 北美小学生英语一年级教材(牛津英语教材)

World Hepatitis Day is observed on May the 19th. It aims to increase awareness worldwide of the diseases hepatitis B and hepatitis C. Its hope is to encourage the prevention and diagnosis of these two diseases, and increase the number of people who r

发表于:2018-12-29 / 阅读(70) / 评论(0) 分类 英语课程学习计划和讲义

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(八)月

The U.S. Special Inspector General for Iraq Reconstruction has criticized the State Department for its management of nearly $3 billion in contracts and grants in Iraq. In two reports, auditors cited weak and ineffective State Department oversight of

发表于:2019-01-13 / 阅读(111) / 评论(0) 分类 VOA标准英语2010年(一月)

The US government is considering, for the first time, the approval of a genetically-modified animal for human consumption. The animal being considered is salmon, but approval could open the door for other animals as well. Those who favor the move say

发表于:2019-01-13 / 阅读(88) / 评论(0) 分类 VOA标准英语2010年(七)月

Stomach cancer is one of the deadliest diseases, and ranks second among cancers worldwide with at least 800,000 deaths yearly. But in the United States, the number of cases has been declining, except for among one group of Americans. Glenda Reimer, h

发表于:2019-01-13 / 阅读(76) / 评论(0) 分类 VOA标准英语2010年(五)月

At Scripps Research Institute in Jupiter, Florida, scientists are working to find clues about how the human brain processes memories. Their laboratory test animal is not a chimp or a dog or a rat animals that we know can remember things it is the com

发表于:2019-01-13 / 阅读(104) / 评论(0) 分类 VOA标准英语2010年(三月)

President Vargas gave Rio the Carnival for which the city became world-famous, but less than two years after his death, a new form of samba emerged that reflected a new political era in Brazil and would bring Rio even more international exposure and

发表于:2019-01-22 / 阅读(84) / 评论(0) 分类 自然百科2012年

Tit for Tat针锋相对An American lady traveling in England some years ago, got into an compartment of a smoking carriage where an Englishman was smoking a pipe. For a short time she sat quietly expecting that the Englishman would stop smoking. But

发表于:2019-01-28 / 阅读(100) / 评论(0) 分类 英语小达人

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(135) / 评论(0) 分类 货币英语

72 约翰斯·霍普金斯疟疾协会 DATE=7-19-01 TITLE=SCIENCE REPORT - Johns Hopkins Malaria Institute BYLINE=Jill Moss (Start at 01'0

发表于:2019-01-30 / 阅读(115) / 评论(0) 分类 科技之光

By Carol Pearson Washington, DC 06 February 2008 Recent studies show that cigarette smoking is one of the most significant factors leading to gum disease. And now, new research indicates smoking marijuana also promotes gum disease even for those who

发表于:2019-02-02 / 阅读(90) / 评论(0) 分类 VOA常速英语2008年(二月)

今天要讲的习惯用语都有这样一个关键词汇: gum。 Gum虽然是个只包括三个字母的简短的词,但是它的意思可不少。比方说,gum可以指嘴里嚼的口香糖,或者是象口香糖那样粘胶似的物质。这时

发表于:2019-02-05 / 阅读(119) / 评论(0) 分类 美国习惯用语

Offering Substitute 提供代用品 Specimen Letters1. Offering Rayon in Place of Watered Silk提供人造丝代替水洗丝Dear Sirs,Thank you for your fax of yesterday (April 3) with your order No.456 for 5,000 metres of 100cm wide watered silk. We

发表于:2019-02-05 / 阅读(124) / 评论(0) 分类 实用英语

By Cathy Majtenyi Nairobi, Kenya 06 December 2007 Kenya's capital, Nairobi, is home to one of Africa's largest dumpsites. A recent United Nations study found that nearly half of the children surveyed who live near the dumpsite suffer from serious med

发表于:2019-02-07 / 阅读(153) / 评论(0) 分类 VOA常速英语2007年(十二月)

RIO DE JANEIRO, Sept. 27 (Xinhua) -- The leader of Fluminense's defense, Gum was announced on Tuesday to need a period of two months to recuperate from a detached tendon in his upper right thigh. With only 12 rounds remaining in the 2011 Brazilian Ch

发表于:2019-02-08 / 阅读(98) / 评论(0) 分类 英语新闻

That's not right,that's not right.All right,here's something else that is not right. 这样做是不对的 这样做是不对的 还有一些事是不对的 These photos you all sent in for our segment,what's wrong with these photos?photos. 你们为接

发表于:2019-02-22 / 阅读(69) / 评论(0) 分类 艾伦脱口秀

Pre-Listening Vocabulary ban: to disallow disposal: the throwing away of waste sensor: a device that receives a signal and responds Free Trade Agreement: a formal agreement between countries to trade freely without government interference medicinal:

发表于:2019-02-27 / 阅读(106) / 评论(0) 分类 趣谈英语
学英语单词
'bot
a broken home
acyloxylation
al haniyah
alleluiah
aluminio-
Andumine
astronomical phenomenon
audio-follow-video
auricularia peltata
autotoxic
basaloid cell
basket strainer
Bolligen
boosters
borsuk
boutaris
bromchlorenone
Camptosaurus
central conceptual structure
colloid-osmotic pressure
computer laser technology
deed of priority
dendrochronology
discharge through gas
doubteth
enclosed fitting
EXOS
ferruginous hawk
fire-fighting fleet
floating instrument platform
Flyte
foreign bank
Fort Usher
Fowles
Gardelegn
get one's comeuppance
go though
gray cyclic code
gregarinulae
heat-releasing fluid
homographic solution
house voucher system
Huanzo, Cord.de
hydrocodes
hypereutectoid cast iron
idioecology
impression material
instrumentalises
junk market
logic-sum gate
loins of lamb
man-of-law
maritime buoyage
martha's
measuring sparkgap
mid-februaries
modulated quantity
Myrocongridae
Nagge
navigation analysis
Nerdic
Nigerian capital
nougat
official number certificate
order amoebinas
Orthodox Churches
otho
papillate hair
partial short-circuit
pay through
perhydrocrocetin
preciation
press-powder
protective capacitor
ranked payoff
rankinite
remote maintenance philosophy
repair according to condition
Sandston
Schizaeaceae
Second Vatican Council
serial type of task
shadow-Moire test
sindesvel
smoke limit
snowmakings
spreadeagled
stand in good stead
static processor allocation
stretch the envelope
tidswell
torslograph
Trichotrachelidae
type classification
unforfeit
updraft
vapor corrosion inhibiter
vatten
vha
web application
yanka