氯化锇

New Solar Cell Minimizes Environmental Risks in Manufacturing Process 新的太阳能电池减少生产中对环境的危害 Scientists in England report the development of a new solar cell that minimizes environmental risks in the manufacturing proc

发表于:2018-12-08 / 阅读(157) / 评论(0) 分类 VOA标准英语2014年(六月)

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(155) / 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(210) / 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(148) / 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(143) / 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(245) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
4-h club leader
acth-like structure
Argo Plain
bardolatrous
be employed in
Big Floyd
Bobolice
broadband telephone
Bu Craa, Uad
burgine
cable properties
camphorwood chest in carved lacquer
cargo handling machine
carp-
chinese softshell turtle
chrome plated claw hammer
Codonopsis subsimplex
conjugate linear function
corpus lignosum divisum
crude thyroxine
cultured fishes
custom-making
delayed liming
ditto mark
dualstar
effective accumulated temperature
eight-hour
eka-iridium
elliptical coordinates
entrusts
estimated revenue
factors
family Caprimulgidae
field amplitude
filliing
frame feature
Gazzo Veronese
general objective of compliance test
generator protection for earthing
glucose agar media
heavy element radioactive material electromagnetic separator
hypersexualized
I.V.T.
illiterate people
in sympathy with
Kamyshla
Kralendijk
limitedaccess highway
macro crack
Mayaguana Pass.
milk stone
miss an accident
moveout velocity
myrdalsjokull
neo-Catholic
not above
old nova
ordinating
overhead method
Pacific Plate
parapluie
parawollastonite (wollastonite-2m)
partly webbed
phlebotomize
piffles
plateros sauteri
problem of unemployment
production speed
prunings
reactor core structure
relative deferred addressing
retrochorally
ridge line
ring remover
rutenite (jaipurite)
San Urbano
self-acting idler
sesquidiploid
short dash line
sibenik (sebenico)
single-element fuse
slicingly
smitsman
sodium difluorophosphate
sperm mother cell
spheroquartic
synchronous execution
taking
through survey
to have a bone to pick
Transgeneic
Trebienyl
tropical protozoal infection
two-dimensional Turing machine
unambitiousness
unencrypted password file
untrammeling
Ust'-Tara
voice unit
words with numbers
yawing moment