音标:['sititәun] ;
[建] 金雀花酮, 野靛酮

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(161) / 评论(0) 分类 Scientific American(八)月

This is the VOA Special English Health Report. Every few years, two groups do a study of how many Americans wash their hands after using the toilet. These groups are the American Society for Microbiology and the American Cleaning Institute, formerly

发表于:2018-12-07 / 阅读(117) / 评论(0) 分类 2010年VOA慢速英语(九)月

[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(173) / 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(120) / 评论(0) 分类 英语课程学习计划和讲义

今天我们要学的词是tit-for-tat. Tit-for-tat意思是针锋相对,以牙还牙。Islamist militants' attacks and tit-for-tat violence between rival ethnic groups have cast doubt on Mali's upcoming elections. 伊斯兰国激进分子的袭击和

发表于:2018-12-30 / 阅读(104) / 评论(0) 分类 英语单词荟萃

The Tertiary Education Commission (the TEC) announced the funding for polytechs and universities for the next 3 years. The TEC is the government organisation responsible for tertiary institutions like polytechs and universities so this is government

发表于:2018-12-31 / 阅读(145) / 评论(0) 分类 新西兰英语

By Jessica Berman The U.S. space agency has released the first close-up pictures of Titan, Saturn's secretive, giant moon. Photos from the international Cassini spacecraft show the orbiting object shr

发表于:2019-01-03 / 阅读(118) / 评论(0) 分类 VOA2004(下)--健康科技

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(128) / 评论(0) 分类 Scientific American(八)月

The itsy bitsy spider climed up the water spout. Down came the rain, and washed the spider out. Up came the sun, and dried up all the rain, And the itsy bitsy spider went up the spout again.

发表于:2019-01-09 / 阅读(362) / 评论(0) 分类 鹅妈妈童谣

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(214) / 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(165) / 评论(0) 分类 VOA标准英语2010年(七)月

Oum Sok began working as a cyclo driver when he was 18. He says the city has become very expensive over the years, making it much harder to earn a living. New York has its yellow cab. London has its red bus. But Phnom Penh has its cyclo - a three-whe

发表于:2019-01-13 / 阅读(186) / 评论(0) 分类 VOA标准英语2010年(六)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(132) / 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(166) / 评论(0) 分类 VOA标准英语2010年(三月)

This is the VOA Special English Development Report. Health experts predict that soon, more people will die from cancer than from AIDS, tuberculosis and malaria combined. They expect that by two thousand ten, cancer will become the world's leading cau

发表于:2019-01-20 / 阅读(125) / 评论(0) 分类 2010年慢速英语(三)月

Glaucoma is the leading cause of irreversible loss of vision worldwide and now doctors believe the devastating disease begins in the brain and not in the eye as has long been thought. Dr. David Calkins, director of research at the Vanderbilt Eye Inst

发表于:2019-01-20 / 阅读(122) / 评论(0) 分类 VOA标准英语2010年(三月)

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(144) / 评论(0) 分类 英语小达人

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(180) / 评论(0) 分类 科技之光

今天我们要学的词是multitasking。 Multitasking, 原本是计算机术语,指多重任务同时处理,现在已经被沿用到日常生活中,指同时干很多事情。现在的美国中学生,一边写作业,一边听音乐,还要

发表于:2019-02-02 / 阅读(104) / 评论(0) 分类 英语单词荟萃

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(188) / 评论(0) 分类 实用英语
学英语单词
acanthurus mata
activation hormone
administrative decision
age-appropriate
agrees with
alimentary castration
approval-rating
atropiniz
aust
barbieux
binary program
Boas
bringing up section
canthorrhaphy
carpenter's cape chisel
center forwards
central barrier
chesapeakes
cheviot-finish
christopher walken
class breaks
clearance above bridge deck
clearing hawse
colliding beam
container volume capacity
discrete relaxation
divided policy
egg-shaped ornament
endrin
engine driven blower
engraulis encrasicolus
euroleague
fast neutron fission increase rate
fee of promision commitment charges
feed-back compensation
francicize
head injury
heavy-duty cutter
hortungskorper
interference suppression
interleasing degree
involucratas
john
L-C circuit
law of probability
live tv format
lowest salinity
magneto-optic display
maxlife
multifunctional pipeline
muslim world
nebulan
Nevin
New Beat
ninety column card
oceanophilus
one of these days
ovarii testiculoma
overdogs
paracentral vision
passivation layer
pearl hen
personal car
phytolaccine
playin
polyvinylenedifluoride
pothead insulator
project development
promotional stock
prototype development phase
puts into
ran interference
record hops
repair piece
rotating capacitor
rug-rats
saturated dihalide
shell-types
sheridanite
shrimsley
spring grafting
starter brush
steady state universe
stone polishing machine
sulfide titration
summation flowmeter indicator
superolateral surface
taken objection to
tapis vert
telospecies
Tipler cylinders
TOURNER
tractitian
twistkey
unvulgarize
ventral triangle
verrucous lichen
vibration isolators
waymarked
Wendlandia laxa
whole body vibration of operator
Xantocicline