三氨基乙基纤维素

By Parke Brewer South African Hestrie Cloete has won the last two women's high jump titles at the World Athletics Championships. Now she is looking for gold in the Olympics. The 1.85 meter-tall Hestri

发表于:2018-12-08 / 阅读(111) / 评论(0) 分类 VOA2004(下)--雅典奥运

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(175) / 评论(0) 分类 2014年VOA慢速英语(五)月

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(130) / 评论(0) 分类 VOA双语新闻 2014年1月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(132) / 评论(0) 分类 Scientific American(一)月

Don: Time to go again to the A Moment of Science mailbag. Yal: A listener writes: Dear A Moment of Science, Scientists know that one day we'll run out of oil and other natural sources of energy. Beyond solar power and wind power and ethanol, what are

发表于:2018-12-27 / 阅读(120) / 评论(0) 分类 英语时差8,16

AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: our friend English teacher Lida Baker joins us from Los Angeles to talk about expressions of sympathy. LIDA BAKER: The reason that this came up for me is that a friend of mine los

发表于:2018-12-30 / 阅读(117) / 评论(0) 分类 词汇大师(Wordmaster)

Indra Krishnamurthy Nooyi is the chairwoman and CEO of PepsiCo, which is the world's fourth-largest food and beverage company. She broke the mould at PepsiCo as all previous CEOs were white American men. Nooyi was fifth on Time magazines 2007 list of

发表于:2019-01-01 / 阅读(143) / 评论(0) 分类 各国名人英文介绍

PEOPLE IN AMERICA - May 12, 2002: Dorothy West By Doreen Baingana VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with the Special English Program, PEOPLE IN AMERICA. Every week, we te

发表于:2019-01-07 / 阅读(217) / 评论(0) 分类 People in America

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. It sounds like something out of a bad science fiction novel. During World War II, a fungus called Tricoderma reesei ate its way through US military unifo

发表于:2019-01-08 / 阅读(147) / 评论(0) 分类 Scientific American(五)月

Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

发表于:2019-01-09 / 阅读(132) / 评论(0) 分类 VOA标准英语2011年(四月)

1.- I have a cold. 我感冒了。 - I'm sorry to hear that. 听到这消息我很难过。 2. - What's wrong (the matter, the trouble)? You look unhappy. 怎么啦?您看起来脸色很不好。 - I failed the exam. 我考试没通过。 - Don't t

发表于:2019-01-11 / 阅读(147) / 评论(0) 分类 实用英语

Key Sentences(重点句子) 474.We're sorry to learn that you were injured in an accident. 得知你在事故中受伤,我很遗憾。 475.How are you feeling now? 现在感觉怎么样? 476.We all wish you a quick recovery. 我们都希望

发表于:2019-01-11 / 阅读(131) / 评论(0) 分类 实用英语

Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou

发表于:2019-01-12 / 阅读(131) / 评论(0) 分类 2014年VOA慢速英语(九)月

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(103) / 评论(0) 分类 白领英语晨读

新编英语教程第六册unit01_1_Love_Thy_Neighbor

发表于:2019-01-25 / 阅读(194) / 评论(0) 分类 新编大学英语阅读部分

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(127) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(142) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(140) / 评论(0) 分类 万物简史

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(156) / 评论(0) 分类 TED演讲教育篇

台湾籍旅美老师今天交给我们的句子是: It's not rocket science: Focus on lean protein, healthy fats and non-processed, unrefined carbohydrates such as vegetables, beans, whole grains and fruit. 这不难懂:多摄取低脂肉类、健

发表于:2019-02-22 / 阅读(136) / 评论(0) 分类 留美老师带你每日说英文
学英语单词
acanthodrilines
active four terminal network
AFAFP
aglionbies
alumian (natroalunite)
Arkansas elevation
Atlantic bonito
back porch period
bad mannerss
baggot
barge clipper system
bedim
black adobe soil
brocardica juris
capstan flywheel
clearing revenue
code-element unit
cold spots
combined scraper bulldozer
communication counter measures
cone of dispersion
congenital pancytopenia
continuous distillation method
Cornish, Estrada
critical frequency
decision business
decoder card
demolition waste
dewatering depressurization
dewaxed
diphenyl ethane
dnattitudes
dog's tongue
dongnim (tongnim)
eastern coral snake
Ehrmann's alcohol test meal
farging iceholes
farrieries
fat pocket
FECG
Fluzone
fused bifocal
gain on foreign exchange
gallery beck
gelonine
half-wave amplifier
hexethal sodium
hopped
hunting boat
index hyperopia
inner lead
la la la human steps
lexicogrammatical
machining fluid
massachusetts b.
menskfully
minibiography
multip-purpose ultrasonic cardioscope
Mylepsine
nitzschia lorenziana subtilis
nonstreamed
nourishing blood and tranquilization
o-benzohydrylbenzoic acid
on no condition
Orbitoidacea
outside casual labor
oxide film lightning arrester
pca
pelvimetry
perichaetine
physics student
Pinangapalm
plaster model
playscapes
polyarylsulfone (pasf)
power outages
premium savings bond scheme
prodeather
protistas
psychiatric medicine
quantitative metallography technique
radio meteorograph
recommended temperature ranges for heat treatment
regressively
rift-sawn
Schottky c3l circuit
seavers
self-gardening property
seville orange flower
small capitalization shares
solvent silicone varnish
spine of vertebra
sprocket teeth
tailplane
tank nozzle
top pouring through pencil gates
tropical chlorosis
tummings
ultimate originator
undersecretarial
unpunctuated
zappa