氯化汞准分子激光器

By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca

发表于:2018-12-08 / 阅读(153) / 评论(0) 分类 VOA常速英语2008年(四月)

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(166) / 评论(0) 分类 VOA标准英语2014年(六月)

PEOPLE IN AMERICA -October 27, 2002: Alan Shepard By Avi Arditti VOICE ONE: I'm Shirley Griffith VOICE TWO: And I'm Steve Ember with the VOA Special English program, People in America. Each week we te

发表于:2018-12-15 / 阅读(160) / 评论(0) 分类 People in America

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(136) / 评论(0) 分类 2013年VOA慢速英语(二)月

Studies that will be released today show that fish, birds and mammals in New England have significant amounts of mercury in their bodies. The studies find the toxic metal in some unexpected habitats and they suggest that power plants in the Midwest a

发表于:2018-12-17 / 阅读(245) / 评论(0) 分类 2009年NPR美国国家公共电台7月

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(158) / 评论(0) 分类 彭蒙惠英语

Las Belle Dame Sans Merci O WHAT can ail thee, knight-at-arms, Alone and palely loitering? The sedge is witherd from the lake, And no birds sing. O what can ail thee, knight-at-arms, So haggard and so woe-begone? The squirrels granary is full, And th

发表于:2019-01-02 / 阅读(227) / 评论(0) 分类 济慈诗歌和书信选(英文版)

The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network

发表于:2019-01-02 / 阅读(152) / 评论(0) 分类 2017年VOA慢速英语(七)月

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(210) / 评论(0) 分类 2013年VOA慢速英语(五)月

By Mil Arcega Washington 09 April 2007 Watch Boeing Fuel Efficient Jets Boeing 787, Fuel Efficient Jets After years of lagging behind European rival Airbus, Boeing says 2007 is shaping up to be a very good year. The Chicago based airplane manufacture

发表于:2019-01-16 / 阅读(208) / 评论(0) 分类 2007年VOA标准英语(四月)

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(168) / 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(222) / 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(159) / 评论(0) 分类 自然百科2009年

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B

发表于:2019-01-30 / 阅读(283) / 评论(0) 分类 科技之光

The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying

发表于:2019-01-31 / 阅读(163) / 评论(0) 分类 英语新闻

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(179) / 评论(0) 分类 VOA常速英语2007年(十一月)

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(151) / 评论(0) 分类 地道美语播客

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(216) / 评论(0) 分类 VOA常速英语2008年(二月)

Todd: Now, Barbara, it's really good to see you. I heard that you were in the hospital. Barbara: Yes, I was. I got sick in august last year and luckily I was with my students and the lady was a nurse. She and her husband drove me to the hospital. I w

发表于:2019-02-18 / 阅读(134) / 评论(0) 分类 原版英语对话1000个

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(257) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
a few of sticks
alschmidt
anisotropic conductive adhesive
antibreaker
ascending trajectory
beakersful
beldame
booster buster
budget baseline
build environment
bump contacts
buttafuoco
butylphenyl anisate
butyrogenic
calavite passage
carbocycles
Carya tonkinensis
Cassiopea
Ciemas
combat carrier
core drying furnace
corybantes
cylinder lever chain
daleus
deep vein thromboses
deletion from two dimensional list
dimidiates
Dividing Creek
dog stiffener
douche nozzles
dusts
flexure fault
fling oneself on sb.'s compassion
fluoridates
from place to place
HHF
high energy bremsstrahlung
high-rpm
huntees
HUVEC
hydrazone reaction
hythergraphs
imposteme
in-wrought
irradiation
itinerant peddlers
johnny cake
lie of the land
light diesel oil
line plate
meeces
meet at Philippi
Mental virginity
meson-nuclear scattering
microtelevision
migrated section
mixed-interval chord
multi-purpose display
next-highest
nonequilibrium system economics
on that
one-tests
opinion testimony
Otodectes
paired two-sample procedure
pawny
penalised
Platonia
polyimide (pi)
precast reinforced concrete
randomly-traceable graph
rearrangement of debts
relaxed mutant
Residential sector
risk sensitivity
Roystonea oleracea
running numbers
schizocarps
sciara
sea-captain
sikr
specialty hair fibres
SSBNs
statman
stepstress test
stirring means
Stock incentive scheme
Stokes stretcher
Strainer Basket
subtraction
tap the market
thermochemical equilibrium
thyristor gate drive circuit
Troxler effect
uninspires
unscummed
upstream resistance
vestlets
water-extracting medium
zahids
zanthoxylum flavums
zinc refining column