[化] 异戊酰氯

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(189) / 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(192) / 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(241) / 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(182) / 评论(0) 分类 自然百科2009年

By Gilbert da Costa Abuja 16 October 2006 An international campaign to draw attention to the huge agricultural potential of the Sahel drylands of Africa is gaining ground, with a recent workshop in Niamey, the capital of Niger. The campaign seeks to

发表于:2019-02-02 / 阅读(277) / 评论(0) 分类 2006年VOA标准英语(十月)

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(170) / 评论(0) 分类 地道美语播客

By Rosanne Skirble Washington 01 April 2007 The wife of presidential candidate John Edwards renewed her fight against breast cancer this week. Elizabeth Edwards is one of three million women in the United States living with the disease. Of the 275,00

发表于:2019-02-04 / 阅读(211) / 评论(0) 分类 2007年VOA标准英语(四月)

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(305) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
acadialite
adland
after-inflation
assinegoes
backspaced
bank statements
barium manganate
beautifully-designed
benefit/cost analysis
bird's-eye chilli
blumenstein
Boolean polynomial
brass casting
cactuslike
cast prudence to the winds
channel overload
character generation unit
ciechanowski
clouston syndrome(hidrotic ectodermal dysplasia)
Clyde, River
company values
cork boring machine
Corynebacterium petrophilum
CRBBB
cross-peen hammer
diacriticals
disk spacer
emergency maneuver
eye-and-ear method
fibrous adhesion
flowcells
folia cacuminis
fordia cauliflora hemsl.
Fuller-Lehigh mill
Fundulidae
gaugeable
Gauland
gewell
ghostbuster
gun burner
H-ICDA
heli-ski
Hosier
hot-wire anemo-meter
is that clear?
jiaxiang
levertin
light relief
line ... up
live in poverty
m'tutor
make ends meet
mid-markets
mikanolide
mimosaceous
mixed design procedure
motor-dynamo
mrn
mugilids
name of manufacture
Nevesinjsko Polje
nobbing machine
nonpercolative
not within an ass's roar of
notes verbales
on-line typewriter
orbiculite
over yonder
oxymetry
palmoplantar verruca
paracentrobia andoi
Phelps County
picovolt
polynomial complexity
price competition
pronominalisations
prospective borrower
Protestant denomination
PUBLIC directory
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reflexion twin
renotifies
set of claims
siderolite
spinach dip
szendrey
tax loss
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trustiness
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untainted
vena saphena
vibrating viscometer
volunteer to
vorpal
Waldkappel
welcome in
working fluid (pneumatic)
xorphanol
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zirconium orthosilicate