氰乙基纤维素

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(192) / 评论(0) 分类 2014年VOA慢速英语(五)月

NASA Announces Next Generation Spacecraft NASA has unveiled plans for its next-generation, post-Shuttle spacecraft to carry humans into earth orbit and beyond. The state-of-the-art, four-astronaut capsule, called the Multi-Purpose Crew Vehicle or MPC

发表于:2018-12-16 / 阅读(173) / 评论(0) 分类 VOA标准英语2011年(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(144) / 评论(0) 分类 VOA双语新闻 2014年1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(136) / 评论(0) 分类 英语时差8,16

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(167) / 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(148) / 评论(0) 分类 VOA标准英语2011年(四月)

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(142) / 评论(0) 分类 2014年VOA慢速英语(九)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(149) / 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(115) / 评论(0) 分类 白领英语晨读

The planet also began releasing oxygen, thanks to an ancient adoption of photosynthesis. A very ancestral primitive plant cell either engulfed or tried to digest or surrounded a cyanobaterium and instead of digesting it, it actually became an organ w

发表于:2019-01-23 / 阅读(143) / 评论(0) 分类 探索与发现2014年

 Superglue 强力胶 Male: Help!Help! Female:What's wrong? M: I was fixing my coffee cup with superglue .And I must have got some on my fingers but I scratch my forhead.And now my hand is stuck to my head. F: Superglue ? Cool! What makes supergl

发表于:2019-01-26 / 阅读(119) / 评论(0) 分类 英语听力文摘 English Digest

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(144) / 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(159) / 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(162) / 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(177) / 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(152) / 评论(0) 分类 留美老师带你每日说英文
学英语单词
aceite
act on advice
alternate coding key
aminodinitrophenol
anacardates
arteria mesenterica inferior
asplenium cuneatiforme
at a given time
bacillibactin
balyk
basiprobosics
bernarr
biznasses
Boston, Ralph
brunswicks
Central Bank of the Philippines
collecting soil solutions
compacted volume
conducti
cork cell
cost of debt
counterirritation
d'hamilcar
daily operating cost
digital servo control system
diplomellituria
doatings
earthquake-prone
Elfving distribution
episcleral tissue
fairmindedness
financial books
fluid-bed processing
fully secured liability
Gotharidite
gulchgold
hypermotard
ieee 802 stand 802.5 (token ring)
immobile adsorbate
inosine triphosphate
inter-mating
interim earnings statement
intermediate credit
invierno
kistna r. (krishna)
koryak
lemmus trimucronatuss
London Port
long pelvis
malonamide
melow
monastic library
morriseys
multichannel transmitter
multiplicative channel
new line
noctilucent train
Old English cut
Olutanga I.
overflow tank inlet tube sleeve
palaeofaeces
papyritious
pass one's eyes over
passiflora foetidas
phase mark
pipe erosion
pitch contours
plus fours
progression of equipment
radiation door
rhus juice
rubble piles
rust resistance
seromucus
shear lag
sisterships
social purchasing power
spiritual worlds
stabilization-process
standard ship (size)
subgrain formation
subtropical easterlies
sulci popliteus
sustainable mitigation scenarios
tahaga
thaumatoptyx oligoptyx
thrust wheel
time-division command synchronization
tomosonograph
transcortical aphasias
transmigration
tropical american floral region
unmethylated alcohol
up to the ears
vacuum fusion gas chromatography
variable displacement hydraulic system
vsoes
wedgwoods
wohltats
X-ray machine
xeroform
xmax