1-乙基-1-苯基硫脲

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(187) / 评论(0) 分类 2014年VOA慢速英语(五)月

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(159) / 评论(0) 分类 万物简史

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(140) / 评论(0) 分类 VOA双语新闻 2014年1月

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(135) / 评论(0) 分类 Scientific American(三)月

Pet turtles can be unsanitary. But Chinese soft-shelled turtles really up the ante on distasteful behavior. They perform a variation on urinationthrough their mouths. Most land-based vertebrates produce urine to get rid of water-soluble toxic waste,

发表于:2018-12-24 / 阅读(177) / 评论(0) 分类 Scientific American(十)月

Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

发表于:2018-12-28 / 阅读(114) / 评论(0) 分类 初学者听力文摘精选

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(155) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(159) / 评论(0) 分类 Scientific American(十一)月

Promising Mosquito Repellent Announced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 6

发表于:2019-01-14 / 阅读(148) / 评论(0) 分类 VOA标准英语2014年(一月)

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(111) / 评论(0) 分类 白领英语晨读

Science and technology 科学技术 Reptilian micturition 爬行动物的排尿 That's a relief 可算是方便了 Softshell turtles urinate through their mouths 鳖类通过其嘴部小便 WHY did the turtle stick its head in a bucket? 为什么乌龟

发表于:2019-02-03 / 阅读(200) / 评论(0) 分类 经济学人科技系列

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(297) / 评论(0) 分类 英语新闻

A bureaucrat was hiking when he came upon a shepherd tending a large flock. The bureaucrat took a fancy to the sheep and asked the shepherd, If I can guess how many there are, may I have one? The shepherd thought it unlikely the man would guess the e

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

今天我们要学的词是bureaucracy。 Bureaucracy, 官僚。美国国防部长盖茨上周末公开对军方庞大的官僚体制提出批评。 Gates took aim at what he called a bloated bureaucracy, 他还保证要亲自过问,精简军方的官

发表于:2019-02-08 / 阅读(135) / 评论(0) 分类 英语单词荟萃

Volkswagen has devised a new catalytic converter that could fix the majority of the cars in the US affected by the diesel emissions scandal, as details emerge of its attempts to satisfy regulators. 大众汽车(Volkswagen)设计出一种新的催化转

发表于:2019-02-08 / 阅读(167) / 评论(0) 分类 英语新闻

Conflict resolution marked the career of former Finnish president Martti Ahtisaari who has received this year's Nobel Peace Prize for his efforts to secure peace in various regions of the world. In this report from Washington, Senior Correspondent A

发表于:2019-02-12 / 阅读(141) / 评论(0) 分类 VOA标准英语2008年(十月)

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(139) / 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(155) / 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(156) / 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(172) / 评论(0) 分类 TED演讲教育篇
学英语单词
adsorbed hydrocarbon method
agitator mixer
all sweetness and light
alloy clading
atomic radiation
Austral Fracture Zone
bancus regis
beijing city
blacken out
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capsule communicator
caustic liquor
central audit agency
classicising
Coachford
conetta
congruent point sets
contiguous concatenation
curling roll
discontinuous gradation
dyke fortifying project
entoloma sinuatums
fantaisies
farofa
fatty streaks
Feshi
fontanesia phyllyraeoides labill
foreswores
foul and fair
Franquenite
freerun
frequency, field
friction ring
genus argonautas
get one's hackles up
Haitian
hand method
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intelligent printer
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kaffraria
legalize
methoxyisoeugenol
milecastles
Millitron
monaxons
monoosteitic
multiple track range
nakhtmin
national asset
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new-plaier
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nootropic
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omnibook
Onosma sinicum
optimum curve
panel center of pressure
parental generation
phonologization
pond weed
post-tonsillectomy
pressure of supply water
printed circuit board portable tester
prototype system
quinova-
rail grinding car
rain drop test
ramolinoes
recoil ionization chamber
reglucosylating
Rowton
samains
sea-chest
second epistle of paul the apostle to timothies
Sedotussin
semantic memories
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silver nitrates
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Tabrichat
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That Was The Week That Was
tick marks
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Twainish
unimodel response surface
unliteral
upper circles
varotsos
very high speed integrated circuit
waless
weak rock
westphal-strumpell(syndrome)
wheel lug bolt