[化] 甲酸乙酯
[医] 甲酸乙酯

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(66) / 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(62) / 评论(0) 分类 VOA双语新闻 2014年1月

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(53) / 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(60) / 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(53) / 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(68) / 评论(0) 分类 TED演讲教育篇
学英语单词
acetylenediol
achylia
ampere per square meter
Annona cherimola
anti-allergenic
aquacreptite
articles of trade
atmospheric layer
back up area
bakoye (bakoy)
barostatic relief valve
Bernhardi, Friedrich A.J.von
bittily
boiler slag
boxthorn fruit
business libraries and collections
capcodes
carved pile
child-poverty
clit teaser
consonant chord
cooking room
CRPO
cycle time allowances
debug terminal
differential aileron
double head set
dressed with masthead flags
dwarf forest
e-mail aliasing
Edin.
embryonin
epipharyngeal groove
erdem
etyms
fanclub
fatehpurs
fermented tea
finite aggregate
furtado
genderised
geometric metamerism
government-wide
hampeella pallens
Hokkipo
homalonotids
homoveratrole
hyaloid gossa
ilmors
incomprehended
introspectable
jumaring
jury systems
kadais
kobaltspath (sphaerocobaltite)
kurchi bark
laemodonta typica
leschly
leucaemoid
long term investment
Lycopidinae
manly
market leaders
microgamont
mieux
NACCB
nervous urine
nonDarwinian evolution
nonself-embedding grammar
offset gap switch
other trade
overdetermined equation
pacific tree toads
paging area
polar transport
proclivity
proletarians
pruine
Pt-Zn couple
puopulsion coefficient
queer the pitch for queer someone's pitch
Re(Renolds number)
reversetransfer admittance
rigid optical system
secondary risks
secretum
security duty
shielding low tension insulator
short-stalked
single phase converter
smotherings
special guard
spondylitides
stillbirth rate
stoppedflow
subleaflet
supersonic wave Doppler diagnosing instrument
thiocarbazono
time-cycle
water-oil emulsion
worm-and-single-roller steering gear
wosas