亚砷酸乙酯

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

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(125) / 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(124) / 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

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(124) / 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(151) / 评论(0) 分类 TED演讲教育篇
学英语单词
above one's station
adjustable set square
algorithm theory
all-optical signal up-conversion
alpha privative
Arapey, Cuchilla de los
ardeshir
argol-bargol
AstroTurf
B line
balanced method
belting wire
between the bark and the wood
biogeographies
biradical
break even level
breast-beater
bring up something
brunais
BskyB
burgat
C.M.T.C.
Campanumoea inflata
Carluke
check valve for hot water inlet
christmas in my heart
cihuacoatl
climate science
Cock Bridge
computation of tax amount
convector heating
course recorder
cucumariids
degraded allite
dichlorphenamide
Doll's House, A
ecologic benefit
electric-driven chain block
end cutting angle
fake medicine
fixed stamp tax
Francisco I.Madero
geographical ecology
goujat
gravity feed tanks
graybeal
halevies
harvest wheat
heade
historical geography
hornbee
HURCN
hymeniitis
integrated pest management
intuitionistic
iodyrite (iodargyrite)
istiqlal
Judas-tree
Kakuni
leopard-skins
linear functional dependence
lipidome
lymph gland sinuses
mail-out
Mepartricin-Sodiumlaurylsul
Mittelbrunn
myrmekitic structure
mythification
napoletano
necrodochium
optic recess
overroof
Palaearctic
Palinocraspis
penicillin V
pltw
polarizing target
population limitation
preseries
proteoglycan-M
punily
quantum well structure
radiator cooling tube
Rubus fujianensis
salung
scul(l)duggery
socratic ironies
speculatist
split ingot mold
stride piano
sumptuosities
thirdborns
thymelaealess
toxic level
tsalsahuatl
tsukiyama
United Free Church
untamableness
usnea rubicunda
walking iron
white-plum blossom snake
wind-photovoltaic hybrid power system