氯化铅(II) {二氯化铅}

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(60) / 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(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

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
abrenounced
absorptive capacity for external assistance
abstable
action grant
address multiplex
Andrew Jackson
armature core lamination
at the age of
attitude problem
audit of public loans
autoploid
baggingly
Ban Mae Thot
basic ferric acetate
be free to
bid and asked prices
Bischofswerda
bony palate
bushwacks
CAFC
carbohumin
check program
cinquecentists
close-end diaries
corallites
ctd.
custance
Dendrocalamopsis daii
dibutyryls
dicranidion fragile
dietal
distance measurement equipment
distill off
duesse
dust-bathe
Ebbe Glacier
englebert
escherite (epidote)
ethyl azelate
eyelid coloboma
fog(-track) chamber
four-way stop sign
gastro-intestinal hormones
glimchers
heavier - than - air craft
i-torn
inferior land
inflectional morphology
inhibitory neurotransmitter
jet-deflector
labo(u)r statement
lighting bridge
lithium carbonates
loan trust
make a permanent requisition on the urban and rural land
multipersoned
myelolymphangioma
on the opposite page
optical domain service interconnect
photo-collotype
phylogenetic lines
Pianoro
pillow block bearing
planning and analysis for production
pointer-type indicating instrument
primary attachment epithelium
produs
proteotoxicities
PVZ
quartz-diorite intrusion
queue size
radio-beam transmitting station
reamplifying
recovery data
regulatory
retrospondylolisthesis
ripple carry adder
rolling load
sea-bornes
send in something
short stature
shoulder chuck
skirtlike
slide arm
smartarse
source-destination system
special perturbations
spherical configuration
squickiest
state of control
statutory employee
synchondrosis epiphyseos
talarik
the status of affairs
tracheal cannula
trail heats
type definition part
unity slope
unredeemed
vigier
whipped vote
woohs