na. 聚氯乙烯
[网络] 聚氯乙烯纤维;氯纶

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(138) / 评论(0) 分类 VOA标准英语2014年(六月)

Recycling Plastics When plastic containers are recycled, they are first cleaned, then ground into tiny pellets and put into a flotation tank. This separates out the various plastic resins from other waste material. Once they are separated out, the pl

发表于:2018-12-27 / 阅读(119) / 评论(0) 分类 英语时差8,16

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(132) / 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(189) / 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(131) / 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(129) / 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(221) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
.cad
6'-acetylhyperoside
Abay-Bazar
air-supported fabric dome
alkylboranes
Alverstone
apopetalous flower
artschwager
australian floral kingdom
australopiths
azide glucose broth
barley pearling mill
be confined to
belt fish
biological classification
bounce rate
bowl spindle
breakfront
briberess
buryt
candystripers
centrespread
cleonaria taiwana
conditioned secretion
conversion systems
descrives
dhcp client
diagram of link
dihigo
dislocation of knee joint
duels
DVD-9
elopss
end-expiratory gas
equality
experience school of management thought
fatten out
five-eighth
fixed compression mould
flight strip design
forwarddirection
fully charged
gasoline straight-run
glomus coccygicum
gnars
grassy-leafed
haarmann
hair-wire
home-turf
hot chocolate
HZ star
inequigranular
international Convention on Load lines
it's no skin off my nose
Jefferson, Joseph
Kummell-Verneuil disease
lady cracker
Lagopsis flava
lig. inguinale
liquid fuse
live under the same roof with sb
low temperature thermometry
macrophagelike cell
microproses
mottling of teeth
muradov
needle brake
nonpersonnel
Nova Iguacu
oceanic tholeite
omalizumab
overaccelerates
oxidation-induced stacking fault
paleo- (palaeo-)
pedal-rod bracket
pellet implantation
pressure-type capacitor
quagmires
r-oxyphenbutazone
regenerative pulse generator
rutaceous
scant of breath
sea water booster pump
sheftel
shuttle-pin
stannous malate
Stipa regeliana
stone-washeds
Suabian
supply grants
surface hologram
Thalictrum acutifolium
the spit and image of
three series theorem
thyroid globulin
tileston
troop helicopter
upper avons
uvula of cerebellum
warband
water quality analyzer
whole dollar accounting