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(187) / 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(165) / 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(139) / 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(132) / 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(161) / 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(141) / 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(137) / 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(144) / 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(110) / 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(136) / 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(115) / 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(135) / 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(153) / 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(154) / 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(170) / 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(146) / 评论(0) 分类 留美老师带你每日说英文
学英语单词
add
aerobiotically
air-water two phase flow
apsidal rotation
artificial duct
autapomorphy
Ballynahinch
bedtime stories
Beinn Bhuidhe
bezold-brucke phenomenon
brainstorming session
brass ceiling
caam
chalk bed
Cherusci
china green
column address select
combinated navigation
conchrome
customer panel
cylindrical grate ball mill
dabbling ducks
daily audit
deciduous hollies
delahunt
diode transformer
double venturi
draglifts
energy resource
first-aider
flax drier
forestart
frequency-sensitive device
Gijang-gun
Goumbati
guru nanaks
Haliotidae
hemihaploid
hydrogen leakage
Inoviridae
international safe guards
Internet appliance
invariant of knot type
investment budgey
just seventeen
litmus whey gelatin
loan servicing
location of economic activity
lorise
lutheranism
magdala red
make the grand tour of
Maoutia setosa
mercury intrusion porosimeter
mezzanines
MFC (manual frequency control)
midheight of digit
monotypical
nanosievert
nebulous star
negative image
nozzle solenoid
oblique-slip fault
oriented section
Osmussaar
overdriven condenser
overload measurement
pack ... bags
Paw Paw Lake
peripheral prompt
peter minuits
phthisiologist
Physochlaina
pins and needles
pluralistic theory
positive response zone
preserving glasses
pteronophobia
regime of high seas
resilience stability
roll wheel line move sprinkling machine
sedum stellariaiifolium
shawlings
shielding barrier equipment
skillessness
soapbox
speed-skating
sprue former
stollen
superimposed river(superposed river)
Svefneyjar
tail gas treatment
tape gage
tendonectomy
Tripleurospermum homogamum
Trumpish
unlifted reef
urocyanogen
vacuum refining furnace
wettumbling
Zijpe