[化] 二氯苄氯铵

With the development of science, human life has changed tremendously. People living in the 18th or 19th centuries would never imagine the advanced household appliances we are now able to enjoy. Every aspect of our lives for instance, in the field of

发表于:2018-11-28 / 阅读(218) / 评论(0) 分类 疯狂英语易背作文

05 关于克隆人计划的争论 DATE=2-21-01 TITLE=SCIENCE REPORT - Cloning Humans BYLINE=George Grow (start at 59

发表于:2018-12-07 / 阅读(180) / 评论(0) 分类 科技之光

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(146) / 评论(0) 分类 VOA标准英语2014年(六月)

[00:00.00]Module 8 IN A MUSEUM [00:07.39]UNIT 1 I'm really excited to be here. [00:12.59]1 Listen and read. Then say. [00:17.92]Thanks for bringing me to the Science Museum [00:20.03]today, Dad. [00:21.66]I'm really excited to be here. [00:24.25]Ther

发表于:2018-12-29 / 阅读(133) / 评论(0) 分类 外研社新标准初中英语九年级

EXPLORATIONS - July 10, 2002: National Museum of the American Indian By Marilyn Christiano EXP-American Indian Museum (RealAudio) VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember

发表于:2019-01-04 / 阅读(141) / 评论(0) 分类 Explorations

SCIENCE IN THE NEWS -May 7, 2002: Humans and Chimps: What's the Difference? / Thousands of Ancient Remains Found in Peru / Rice Genes Mapped VOICE ONE: This is Doug Johnson. VOICE TWO: And this is Bob

发表于:2019-01-07 / 阅读(140) / 评论(0) 分类 科技之光

By Jim Malone Washington 23 June 2006 U.S. officials have arrested seven men in connection with what Bush administration officials say was a homegrown terrorist plot that targeted buildings in Miami and Chicago. Alberto Gonzales, front right, with D

发表于:2019-01-11 / 阅读(187) / 评论(0) 分类 2006年VOA标准英语(六月)

By Parke Brewer Atlanta 03 April 2007 The University of Florida has won the U.S. men's Division One college basketball championship, for the second straight year. VOA Sports Editor Parke Brewer reports from Atlanta on Florida's 84-75 victory over Oh

发表于:2019-01-11 / 阅读(155) / 评论(0) 分类 2007年VOA标准英语(四月)

Education Report - A Living Science Exhibit Grows at a Museum This is the VOA Special English Education Report. Outdoors, in the open air, seems like a natural place to study natural science. It also makes sense in a place like Southern California wh

发表于:2019-01-12 / 阅读(163) / 评论(0) 分类 2012年VOA慢速英语(六)月

By Al Pessin Pentagon 26 October 2006 U.S. Defense Secretary Donald Rumsfeld says it is entirely reasonable for U.S. and Iraqi officials to discuss setting benchmarks and target dates for achieving their goals during the coming year. He says some of

发表于:2019-01-12 / 阅读(195) / 评论(0) 分类 2006年VOA标准英语(十月)

By Al Pessin Pentagon 21 February 2006 U.S. Defense Secretary Donald Rumsfeld says he has no problem with the U.S. government decision to allow a company from the United Arab Emirates to take over a c

发表于:2019-01-13 / 阅读(168) / 评论(0) 分类 2006年VOA标准英语(二月)

Human Rights Trial in Guatemala Could Set Global Precedent Chanting justice, justice, protesters in Guatemala City reacted angrily to the suspension of the trial earlier this month. The protesters, mainly indigenous people, want the 86-year-old forme

发表于:2019-01-14 / 阅读(109) / 评论(0) 分类 VOA标准英语2013年(四月)

BBC Learning English Weekender Affluenza Jackie: Hello, welcome to Weekender. I'm Jackie Dalton and today we're going to talk about 'affluenza' that's a word you've probably not heard before but don't worry, that's because it's only just been invent

发表于:2019-01-16 / 阅读(155) / 评论(0) 分类 Weekender

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(140) / 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(197) / 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(140) / 评论(0) 分类 自然百科2009年

The Green Leaves of Summer - 美国乡村音乐 A time to be reaping收获的季节到了 A time to be sowing播种的季节到了 The green leaves of summer are calling me home夏日绿叶,呼唤我回到家乡 It was good to be young then in the season of plenty在任何季节年轻

发表于:2019-02-02 / 阅读(168) / 评论(0) 分类 美国乡村音乐

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(135) / 评论(0) 分类 地道美语播客

Young MBAs Compete to Solve Global Problems Solving the worlds most pressing social challenges takes passion, dedication, innovation and a good business plan, which is the idea behind the Hult Global Case Challenge. Hult International Business school

发表于:2019-02-12 / 阅读(214) / 评论(0) 分类 VOA标准英语2011年(十月)

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(230) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
aboaclusion
alastrim virus
all right reserved
alternating current control circuit
amebucort
ASAROTIFORMES
bagsnatcher
be terminated with
billygrams
borrowing from affiliate
bright idea
brutification
cable kilometer
calcined phosphate
canales spiralis modioli
central-adjustable handle-adjustable wrench
chaudry
conjugate matrix
Coral Sea
coureurs
crime-fighting
crippler
cryptopenaeus clevai
diceys
direction of error
disprins
dragra
eat and flow
embryonic adaptation
eyelet hole
femail
fire-enhancing grasses
fund for industrial investment
gas sensory semiconductor
gcep
get sb to do
glyfosfin
golddust
grating grid
half block model
horn condenser
hypodermic
IALA Maritime Buoyage System
imagine infra-red
indirect retainer
inferior maxilla
inner dead centre
intermittent flow settling tank
internal plasticization
interrupt request handling
jewelweeds
Kallifoni
karif
large-scaled
lather oil
light beacon system
lueck
manganeseous
medical optical instrument
Melanogrammus
membranous semicircular canals
microcomputer kit assembler
MOS shift register
murmurator
o-chlorobenzoic acid
oral rehydration
overhead counter shaft
panopsin
personal and instrumental equation
physically based
pitch spiral
postpharynx
program transmitter
pros and cons
rear track
red-water fever
rizzuto
screw-down valve
sieving test
srame synchronization
St Frances
St Jo
suicide Tuesdays
sulfur content in gas
surface mine design
surgical needle
symbiological
ten-shilling
thioencarb
to get up
two-color hologram
two-stage liquifaction
ulcerans
ultra-high pressure sintering
underboard
underruffing
ventilation pressure map
vinylpyrrolidones
vrow
wafer inspection station
woodturning
X2-TEST