二氯化汞

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(107) / 评论(0) 分类 2016年Scientific American(一)月

Fred: Hi, Shibika, so this is almost the end of the year, 2007. Can you tell me a bit, how was your year this year? Shibika: Yeah, I had pretty nice year actually. I went through a lot of ups and downs, and yeah, at first I did really well in my clas

发表于:2019-01-20 / 阅读(124) / 评论(0) 分类 原版英语对话1000个

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(64) / 评论(0) 分类 自然百科2009年

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(55) / 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(119) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
ac servo
adjourned session
adonais
angklungs
aromadendral
Asparukh
Baierrite
batchelder
behavin'
Berkeley Internet Name Domain
bidirectionality
break the news
characteristic exponent of variational equation
chicoreus superbus
Cissampelopsis corifolia
commutator V-ring insulation
cover up
deductible expenses
dlnr
Doagh I.
dressing of a surface
drill for oil
eerde
enzootic encephalitis of horses
estuary resonance
evacuation station
extension speed
femalized
final impulse operating relay
firedamp pressure chambers
flanking march
flash point test
fracture resistance
functional module
gas filled rectifier tube
gnetophyte
gravestead
guided bomber
gymnite
Gymnocoronis
hauller
hellenizer
imperative operation
inofficiosity
iodine-131s
JMM
keratella cochlearis
kinomometer
lesser fullness?
local maximum
locus linkage analysis
m-xxl
magnesiae magma
Marano, L.di
moncktons
money-purchase plan
mythicizer
non-aromatic
nonpresetting control
occupational orientation
oligocellular
Omitara
onge
organic stabilizer
P.C.A.T.
paired nucleus
Paramobil
peniophora pseudonuda
peraluminous rock
perle cotton
personal robot
play a wrong card
polyalthia suberosa thwaits
polytene chromosomes
potassium borotartrate
pulse cable
qingnian
renormalization of wave function
Selmer guitar
semisilica refractory
simmerman
sinoidal
so mickle
sodium undecylenate
solidified petroleum
spiracular sulcus
Techsci
testing position
thermostage
torsion of gallbladder
total clearance
Trigonum omoclaviculare
tubercle of sellae
tungua
undesirer
user-interface thread
uteroferrin
water meter chamber
welt-grooving machine
wet drum magnetic separator
wet the bed
ZALAMBDODONTS