N-2-氰乙基苯丙胺

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(172) / 评论(0) 分类 2014年VOA慢速英语(五)月

US President Barack Obama has outlined big cuts to the military and a greater presence in the Asia-Pacific region. Tens of thousands of troops will be axed to find half a trillion dollars in savings over the next decade. President Obama says troop nu

发表于:2018-12-11 / 阅读(85) / 评论(0) 分类 澳洲ABC新闻快递2012年

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(124) / 评论(0) 分类 VOA双语新闻 2014年1月

Last week, tens of thousands of gallons of sewage gushed into urban streams in Baltimore, because of leaky pipes and flooding rains. And when that happens, it's not just organic matter and microbes that get flushed into aquatic habitats. It's drug re

发表于:2018-12-24 / 阅读(97) / 评论(0) 分类 2016年Scientific American(八)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(123) / 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(96) / 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(121) / 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(103) / 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(123) / 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(134) / 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(133) / 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(149) / 评论(0) 分类 TED演讲教育篇
学英语单词
5-fluorodeoxyuridine
absorption costings
accountants index
adamsitism
adherent pupa
amorphous layer
APB
apodous
appraiseth
arbitrators.
axial-flow hydroelectric unit
baron clives
bear animalcule
bookish
bromosalicylaldehyde
caesium cycle
cake wax
channel resistance
chemick
civil servant leave regulations
combined framing ship
command exit
conductive polymer
coniluruss
conus memiae
coprinus neolagopus
Costellaria
cryptogramma stelleri
dilatatas
dilaudids
dowy
dronne (la dronne riviere )
eccentric rod and reverse link pin
emphysematous phlegmons
enumerator's schedule
eop
epicentral intensity
equilibriums
equipment committee
explike
fire resisting damper
firing pattern
flow separation region
Gandadiwata, Bukit
gawdawful
grounded input
guided participation
heterozygous chromosome
high and low pressure turbine
horsedicks
I Peter
ionospheric irregularities
IOOC
isolating cock
kyllinga monocephala rottb.
lcshes
letter securities
lewry
lithotresis
luven
malegerent
Mendelian ratio
Michiganians
migalastat
oculomycosis
ojha
oleum Caryophylli
open system interconnection model
operation amplifier
packwood
parotimon
periodic block
pile-in selvedge
pilot boarding place
posted-bid auction
prinipal stress
productive economics
pulveriser
raplee
rational mapping
rehanged
rod tong
rough break
Roumania
safety sub
sail over
schola cantorum
seadornavirus
seasonal labourer
Siberian elms
stoppabler
surf and turf
symbolic information table
syndrome of heat transformed from wind-cold
the Last Supper
thrs
trimle
ulibarri
vernier unit
volcanic tear
yellow-gray