音标:['taɪtə; 'tiːtə] ;
n.
[英国英语]【化学】 = titer

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(224) / 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(159) / 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(226) / 评论(0) 分类 北美小学生英语一年级教材(牛津英语教材)

发表于:2018-12-13 / 阅读(245) / 评论(0) 分类 Wee Sing For Christmas

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(161) / 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(140) / 评论(0) 分类 英语单词荟萃

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(170) / 评论(0) 分类 VOA2004(下)--健康科技

Ring A Ring Of Roses a ring of roses a pocket full of posies (hot-sha hat-sha all fall down)* ring a ring of roses a pocket full of posies (hot-sha hat-sha all fall down)* the king has sent his daughter to fetch a pail of water (hot-sha hat-sha all f

发表于:2019-01-03 / 阅读(265) / 评论(0) 分类 优美儿童英语歌曲

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

发表于:2019-01-10 / 阅读(305) / 评论(0) 分类 Wee Sing Around the World

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(278) / 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(223) / 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(167) / 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(203) / 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(164) / 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(157) / 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(184) / 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(220) / 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(152) / 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(229) / 评论(0) 分类 实用英语
学英语单词
a word of warning
action rate
albani
aniline carcinoma
aroch
attaching nut
attests to
beer-drinkers
behind-the-back
bindlestiff
black insulating varnish
blood lipids
bog rosemaries
boiler feed system instability
bubble scrubber
bugners
callista
Chancos
chardonnay grapes
common high brass
control node
copper(ii) cyanide
cowpens
damage waterline
degrammaticalization
deoxyribonucleic acid(DNA)
derriss
dihydroalantolacton
direct-vision port
down-flow evaporator
dry valve arrester
electric defrost
electric grab
em quads
employee-attitude
export credit rate
filmologist
fluid mosaic membrane model
fmus
frequency-division multiplexing
full-strength
furaguanidine
hlao
hovers
internal compressor
JEMIA
Jordanianize
licking carpet
linear pattern of chains
liquid-membrane curing compound
longspine snipefish
M.Gr
macrolattice
main and return cm
matauras
megaspore mother cell
miasole
morbillivirus measles virus
mutual exclusive
non-recorded vote
nonsurplus
occlusivity
pad-saddle
paetz
palmar hyperhidrosis
paraphrasia literalis
pedunculates
personal water craft (pwc)
phantom bug
phthalimidine
pierno
pinhas
Pulsatilla occidentalis
pyrochemicalprocessing
radioaltimeter
radioautographic
restructure
sdeign
Second thoughts are best.
secondary embryocord
selective automonitoring tracing routine
settling up
skilled workers
slipmeter
solvothermal
Stern-Zartman experiment
street-walker
synonym codon
terrain clearance altitude
thulani
thyristor rectifier cubicle
Thyrsia zea
Timex
tissue calcification
toldo
traumatized
traversing conveyer
ultrahigh speed machining
unfavorable winds
useful economic life
video technology
vowel cluster