9-乙蒽

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(128) / 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(87) / 评论(0) 分类 VOA双语新闻 2014年1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(83) / 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(60) / 评论(0) 分类 白领英语晨读

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(85) / 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(100) / 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(93) / 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(113) / 评论(0) 分类 TED演讲教育篇
学英语单词
2-dimethylaminoacet-aldehyde dimethyl acetal
5ever
adaptive communication environment
administrative authority
antirefugee
apostemation
available height of derrick
box (in the auditorium)
canephoros
carnier
chimborazoes
climatic characteristic
complex-valued field amplitude
conventional person
dakhala
defective lysogen
descending vertical flue
digitized targets
dissipative state
distributed monitoring proxy
drying and cooling
dust feeder
else-where
enterococcus faecalis
evening shift
family Littorinidae
family Pteriidae
far-away
fault heave
fore shaft
Fraser's air sand process
frictional ratio
furtivenesses
geostrophic adjustment
given it up
gratulant
harga-
Herbst's corpuscles
high pressure casing
hypothetical equilibrium tide
Ichang lemons
in the depths of
inclined tee joint
ink flying
intonaco
investment risk analysis
jaheem
jinjiang
kilohyl
knife-like
Kärkölä
Lallan
light coupled device
linear thermal output
main stream flow
mitotically
Monteria
negative conductor
no-pin ora
no-voltage protection test
non sequence
operative associations
optical nonlinear loop mirrors
optical-emission spectrometer
organized molecular assembly
performance coefficient for shaft horse-power
price elasticity of demand for import
proper pruning
QRP
relay nucleus
remotely monitored battlefield sensor system
resolving reagent
retractive force
road mix machine
rock-hole
Sanage-yama
secondary shaft
sewing up
shach
Silal V
simoniacally
split spline crankshaft
strange particles
styphelia trifloras
The evening brings all home.
there's more to this than meets the eye
Tonggye
toxic wastes
triphosphorylate
Tukayyid
typewriter output
underwater sound communication set
unpunk
unsubjection
upratings
ventilation duct spacer
vessel's form
wallnut capacitor
white telephone
working rule
writeto
xiaohua