[化] 二硝基苯硫基氯

Abby: hi, my name's Abby. What's your name? Colin: I'm colin. It's nice to meet you. What do you do? A: I'm a freelance English teacher. How about you? C: I'm in between jobs at the moment. A: what kind of job are you looking for? C: I'd like to find

发表于:2018-11-30 / 阅读(152) / 评论(0) 分类 生活英语情景口语

NOEL KING, HOST: There is a frightening new dimension to the opioid crisis. People who are using cocaine are overdosing, not on cocaine but on fentanyl. Fentanyl makes heroin even more dangerous, and now it's showing up in cocaine as well. And that c

发表于:2018-12-01 / 阅读(129) / 评论(0) 分类 2018年NPR美国国家公共电台3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(111) / 评论(0) 分类 VOA标准英语2014年(六月)

分集介绍:导数,斜率,速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(333) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(122) / 评论(0) 分类 Scientific American(八)月

[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Silly Sausage是Nitrome于2011年5月28日发行的一款益智类游戏,它是以香肠在尽量不碰到其它损失生命物体的情况下吃光所有的钻石再到达终点为标

发表于:2019-01-08 / 阅读(184) / 评论(0) 分类 英语对接游戏

By Sean Maroney Islamabad 28 September 2009 The head coordinator for the U.N. Humanitarian Affairs office in Pakistan says his agency is ready to handle what is expected to be a large number of families fleeing the South Waziristan tribal region as

发表于:2019-01-13 / 阅读(129) / 评论(0) 分类 VOA标准英语2009年(九月)

BBC Learning English Weekender Body image survey results Amber:Hello, I'm Amber, and youre listening to bbclearningenglish.com. In Weekender today, we listen to a report about a BBC survey of 25,000 young British people, asking about their body imag

发表于:2019-01-16 / 阅读(161) / 评论(0) 分类 Weekender

An Even Deadlier Opioid, Carfentanil, Is Hitting The Streets play pause stop mute unmute max volume 00:0003:27repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plu

发表于:2019-01-16 / 阅读(132) / 评论(0) 分类 2016年NPR美国国家公共电台9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(99) / 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(148) / 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(106) / 评论(0) 分类 自然百科2009年

HEALTH REPORT - New Heart Drug Shows Promise in African Americans By Cynthia Kirk Broadcast: Wednesday, November 17, 2004 This is Bob Doughty with the VOA Special English Health Report. Heart failure

发表于:2019-01-30 / 阅读(120) / 评论(0) 分类 健康与经济

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(101) / 评论(0) 分类 地道美语播客

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(127) / 评论(0) 分类 阅读空间

今天我们要学的词是 fentanyl. Fentanyl 芬太尼。U.S. President Trump said he would raise the issue of the flood of cheap and deadly fentanyl when he meets Chinese President Xi Jinping. 美国总统川普说,他见到中国国家主席习近

发表于:2019-02-16 / 阅读(128) / 评论(0) 分类 英语单词荟萃

Today we go on a journey. It starts in Sweden over 100 years ago; and then moves to London; and finally moves to future worlds and other planets. But we start in Sweden. Alfred Nobel spent his life finding ways to blow things up. He was born in 1833

发表于:2019-02-19 / 阅读(98) / 评论(0) 分类 听播客学英语

本期内容: A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(96) / 评论(0) 分类 夏说英语新闻晨读

The State Administration of Science, Technology and Industry for National Defense released 17 pictures captured by Gaofen-4 on Wednesday, covering an area of at least 400 kilometers. The project's chief designer, Tong Xudong, said Gaofen-4 is in good

发表于:2019-02-21 / 阅读(140) / 评论(0) 分类 2016CRI中国国际广播电台

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(172) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
4-Nitroaniline
agronomiques
AKF
all parties
aluminum hydride
Alzheimer's sclerosis
Anaphalis chlamydophylla
anterior limiting membrane corneal dystrophy
arbelest
archiacanthocephala
aurila imotoi
azetomycin
baharian
bakhtinian
bakstone
bar-b
barn burners
bisects
buckhannon
burnt-in sand
calving rate
caracolling
catch flies
chemical fixation
chemocorticoid
circumgyrates
conductor's valve
consumer information sources
crankcase pressure
cross-banding
diode tester
directress
disablement pension
dried syrup
dynamic endurance test
eccentric upset forging
eohypochthonius crassisetiger
facing slide
fault relay
floating raft
floss silk
fuel room
funerary
galactic radio radiation
genus Cyclopterus
geodesia
Greenaugh
grimsson
holiman
immemorial possession
insulation construction
iris microphotometer
Iyar, lyyar
lanoline grease
left coast
lower house
material quantity control
maximum expected value
meadow bright
medicine infusing decocting apparatus
merce
mixed compound
monoclinic form
muffie
non-viable
nucleus neivi oculomotorii
Nyhyttan
off-circuit tap-changer
overstrewed
oxygen monitor controller
oxygen unit
pactum reservati dominii
paraleucobryum longifolium (hedw) loeske
physics of amorphous matter
porto novoes
program mode
prototype test of structure
pseudocyphella
red-bellied snakes
regenerated modified cellulose
regular cracks
reshape
rhizomatic
risk weight
sarasate
scapuloclavicular
semireal time
shovel-handed
single-direction thrust bearing
slapdash
smart card industry association
snortest
soft spacecraft landing
sotnia
source data entry
sugar cane cottony aphid
SVHS
taym
tricarboxylic ester
Trombidiidae
two-seater fighter
Vida Guerra