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[化]倍半氯化物, 三氯化二...

DAVID GREENE, HOST: Families across the United States are fighting with the federal government over a deadly chemical. Dozens of people have died from inhaling methylene chloride. This is an ingredient in common paint removers. NPR's Rebecca Hersher

发表于:2019-01-17 / 阅读(59) / 评论(0) 分类 2018年NPR美国国家公共电台11月

Every winter some twenty million tons of salt are dumped on America's road.That sodium chloride melts the ice, so it prevents its formatin, helping to prevent accidents. But road salt has its downside. This is not very economical because salt is main

发表于:2019-01-20 / 阅读(105) / 评论(0) 分类 2016年Scientific American(一)月

This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway

发表于:2019-01-22 / 阅读(60) / 评论(0) 分类 自然百科2009年

By Cynthia Kirk ENVIRONMENT REPORT -May 31, 2002: Coqui Frogs Invade Hawaii This is the VOA Special English ENVIRONMENT REPORT. Experts say the American state of Hawaii has been invaded by a small fro

发表于:2019-01-28 / 阅读(73) / 评论(0) 分类 健康与环境

Tony: Who did you invite over for dinner Saturday? Carmela: I invited Keith, Sung, Stephanie, and Luis. Tony: You didnt! Carmela: I did. Why? Tony: Youre going to have a hard time cooking for them. Keith is a vegan and only eats food thats organic. S

发表于:2019-02-04 / 阅读(54) / 评论(0) 分类 地道美语播客

First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先,我对您说,海底有锌、铁、银、金等矿藏,开发并不是不可能的事。

发表于:2019-02-25 / 阅读(117) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
across-the-street
adulatorious
aglaiocypris shengmuna
an armchair critic
basal growth
be rude to
begin segment introducer
big inch pipe
biooxidation
blaccent
bumble-puppy
cantlet
cayes
Chlamydothrix ochracea
Chlortet
cholesterol gallstone
cinnamon toast
cinncassiol
clast
conductive foil
connectathon
core earnings
correct position
counter-admiral
cyclotronic resonance mass spectrometer
cytherois mutsuensis
delayed density-dependent factor
Diospyros longibracteata
Dipsacus cyanocapitatus
discontinuous phase transition
erythema polymorphe
ethnic identities
Feulgen method staining
flag sign
fleapits
full locked coil construction rope
hafnium metal powder
highway ferry station
hiveless
index sequential access method
lagacy
laser theory
layer management service
magnetic amplifier
Mainaschaff
manganese salicylate
Mashike
metamorphosis states
microthyrium dryopteridis
morcellator
mundy
narrow-angle aerial camera
nickel carrier
niebuhr
north countrymen
num-nums
octachlorobiphenyls
on the house
Oreocharis forrestii
partlike
peelle
pictas
pincelin
pressure suppression vent
pseudounipolar
quatercentenaries
Quercus engleriana
question in hand
radiotelex letter
ramark
reifezeugnis
reigen (germany)
reproach sb. for sth.
ribbed surface electric machine
rogletimide
security control center
seimens
semichild
shred residue
sop up
sourcing
state forest in the custody
submarine integrated sonar system
supersonic dash distance
surplus heat utilization
Synthomycetine
take ... out
Tangiers
tefilla
tenthest
the higher
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towed vehicle
triangulating
tubular resistance
tuggage
upscaling
value-conscious
weather matrix
weave from
well-traded
wised