[化] 亚乙基二氯; 1,1-二氯乙烷
[医] 1,1-二氯[代]乙烷, 乙叉二氯

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(167) / 评论(0) 分类 2014年VOA慢速英语(五)月

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(130) / 评论(0) 分类 VOA标准英语2014年(六月)

Five Minutes to Midnight 滴!答!滴!毁灭倒数计时 by Kevin Lustig The University of Chicago publishes the Bulletin of the Atomic Scientists, a magazine about topics related to nuclear technology. On the cover of every issue of the magazin

发表于:2018-12-08 / 阅读(107) / 评论(0) 分类 常春藤解析英语

It's Not Easy Being a Kid!-儿童英语故事三

发表于:2018-12-14 / 阅读(131) / 评论(0) 分类 儿童英语故事三

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(121) / 评论(0) 分类 VOA双语新闻 2014年1月

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2018-12-30 / 阅读(101) / 评论(0) 分类 单词解析速记

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

发表于:2019-01-14 / 阅读(117) / 评论(0) 分类 VOA标准英语2014年(一月)

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(121) / 评论(0) 分类 2018年NPR美国国家公共电台11月

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(95) / 评论(0) 分类 白领英语晨读

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(176) / 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(122) / 评论(0) 分类 自然百科2009年

77 流星雨成因探索 Date=8-2-01 Ttle=science report - the Perseid meteor shower Bline=Mario Ritter (Start at 59

发表于:2019-01-30 / 阅读(123) / 评论(0) 分类 科技之光

One of my fellow midshipmen at the U. S. Naval Academy was performing poorly in class and reported to his company officer for counseling., Your marks are deplorable! the officer scolded. Is there a problem-that has kept you from studies?No, sir, the

发表于:2019-02-03 / 阅读(137) / 评论(0) 分类 趣味英语

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(121) / 评论(0) 分类 地道美语播客

BEIJING, Aug. 8 (Xinhua) -- China on Wednesday started to review anti-dumping measures it imposed on chloroprene rubber imported from a Japanese company, the Ministry of Commerce said. The move came after the ministry received complaints that Japan E

发表于:2019-02-05 / 阅读(181) / 评论(0) 分类 英语新闻

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(120) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(134) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(129) / 评论(0) 分类 万物简史

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(146) / 评论(0) 分类 TED演讲教育篇

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(206) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
accumulation clock
alleven
Alpakka
Alpine woodsia
angiokeratoma of fordyce
anthophylite
anticable
ASGE
atmospherictransmission
avoirdupois pound
back financing
bathyl
billet rolling train
break short
buggalow
bursa of Fabricius
Camellia apolyodonta
closed stoke-hold draft
Collarmele
colour of radicle tip
combined nevus
conteck
contract stamp duty
coronatuss
Corporation of Trinity House
curvilinear integral
cuspidated
daisetta
dentil band
design hourly traffic volume
DTVP
dubos
educational applets
elastic stretching
element 126
endotheli ocytosis
Exclusive Brethren
Feathers fly
first category
foreign currency statement
frses
full-toss
futurition
glass jar
goos-haenchen shift
gruberings
Guaranteed Death Benefit
half-rotary cut
hate fuck
horse hair probang
installation elevation of hydraulic turbine
instantaneous readout detector
It was my pleasure.
male reproductive glands
membrana hyaloidea
messianic movement
middle-managements
money for old rope
Mossbauer spectrometry
mother clone
multiline telephone
N-Dimethyltryptamine
number identifier
Oneiroi
open-beach
optimal merge pattern
Outward Bound
overhead efficience variance
oxyquinoline potassium sulfate
ply ... with
positive rake tip
projective group
quarter-back
RA
rear right big light broken
receiving-end transformer
retail rate of exchange
rhabdomyoblasts
rush about
salinometers
San Andres Mountains
self-concepts
shahab
sheetlike mica
Shoshone L.
side yards
slopstone
spar and boom gear
spreadsheet package
square set and fill stoping
ST_liking-and-attractiveness_unbiased-or-impartial
sueability
switched digital service
take reading
target to non-target ratio
theory of servo mechanism
total volume of retail sales
undirtied
unmeasured loss
whaleish
yield obedience to
Yun-ling