激光回波率

VOA常速英语2008年-US Government Reviews Laser Eye Surgery

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(99) / 评论(0)

VOA常速英语2008年（四月）

VOA慢速英语2013 EXPLORATIONS - The History of the Laser

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(86) / 评论(0)

2013年VOA慢速英语(二)月

数学英语 26 What is the Golden Ratio

图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t

发表于:2019-01-02 / 阅读(202) / 评论(0)

数学英语

数学英语 14 How to Use the Golden Ratio

图片1 图片2 by Jason Marshall Despite many peoples assumption to the contrary, math is undeniably artistic. It takes a tremendous amount of creative muscle and artistry to devise mathematical solutions. And, as made evident by their frequent batt

发表于:2019-01-02 / 阅读(232) / 评论(0)

数学英语

Watch the US Navy’s New Laser Weapon in Action

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(102) / 评论(0)

2017年VOA慢速英语(七)月

2005年NPR美国国家公共电台九月-Laser Work Earns Trio Nobel Prize for Phy

This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke

发表于:2019-01-08 / 阅读(158) / 评论(0)

2005年NPR美国国家公共电台

最新英文歌曲精选：Cool Kids – Echosmith

《Cool Kids》是美国另类摇滚乐队。Echosmith，2013年10月4日发行的专辑《Talking Dreams》中的一首主打单曲。第二版音乐录像带已于2014年9月12日通过Echosmith的YouTube账户释出。 She sees them walking in a s

发表于:2019-01-10 / 阅读(87) / 评论(0)

2015最新精选英文歌曲

VOA标准英语2013--The History of the Laser

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(144) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2012--The Laser: Futuristic Science Found at Your Local Store

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: 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

发表于:2019-01-12 / 阅读(105) / 评论(0)

2012年VOA慢速英语(一)月

品味人生篇07：The Echo人生的回音

A son and his father were were walkeing on the mountains. Suddenly, the son falls, hurts himself and screams, AAAhhhh!!! To his surprise, he hears the voice repeating, somewhere in the mountain, AAAhhh!!! Curious, he yells, Who are you? He receives t

发表于:2019-01-17 / 阅读(128) / 评论(0)

英文励志文摘精选

THIS IS AMERICA - Glen Echo Park

THIS IS AMERICA - Glen Echo Park By Jerilyn Watson Broadcast: Monday, June 14, 2004 (MUSIC) VOICE ONE: Welcome to THIS IS AMERICA in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Faith Lapi

发表于:2019-01-30 / 阅读(212) / 评论(0)

This is America

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

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(120) / 评论(0)

VOA常速英语2007年（十一月）

人生的回音The Echo

A son and his father were walking on the mountains. Suddenly, the son falls, hurts himself and screams, AAAhhhh!!!To his surprise, he hears the voice repeating, somewhere in the mountain, AAAhhhh!!! Curious, he yells, Who are you? He receives the ans

发表于:2019-02-03 / 阅读(104) / 评论(0)

英语美文

China cuts its reserve ratio again

BEIJING, May 13 (Xinhuanet) - China's central bank announced on Saturday it would lower the reserve requirement for commercial lenders by 50 basis points, the second time it has taken such action this year to inject more market liquidity and shore up

发表于:2019-02-04 / 阅读(130) / 评论(0)

英语新闻

美国达人鹦鹉Echo 模仿各种声音堪称一绝

What's your name? 你叫什么名字 My name is Sarah Hoft. This here, this is Echo. 我叫 Sarah Hoft.这是回声 How old is he? 他几岁 He is a 15-year-old w-yellow-headed amazon. (A kind of parrot) 他15岁。双黄头亚马逊鹦鹉（一种鹦鹉

发表于:2019-02-04 / 阅读(82) / 评论(0)

英语万花筒

英语歌曲:Leona Lewis专辑《ECHO》首支单曲试听 Ha

Leona Lewis新专辑《ECHO》首支单曲试听 Happy Happy Leona Lewis someone once told me that you have to choose what you win or lose you can't have everything don't you take chances you might feel the pain don't you love in vain cause love won'

发表于:2019-02-06 / 阅读(75) / 评论(0)

好听的英文歌曲

英闻天下——331 China's Unbalanced Sex Ratio and its Ripple Effect

China's sex ratio is quite worrying nowadays. According to census data, China's sex ratio at birth was 108 males to every 100 females in the early 1980s, only slightly above the natural rate of 103 to 107. In 2000 the ratio was 116.9 males to 100 fem

发表于:2019-02-14 / 阅读(126) / 评论(0)

英闻天下

散文欣赏-回声 Echo

Long long ago, there was a nymph whose name was Echo. She liked talk very much, and she always repeated what she had just said.One day, she offended[2] her master, the great Hera by speaking rudely to her, she decided that echo should never use her v

发表于:2019-02-19 / 阅读(103) / 评论(0)

英语美文

音乐咖啡厅:Christina Grimmie - Echo

Boy I don't understand your drama Thought we were having fun should I not have called you Should I be sorry for being me I'm just trying piece together your mind You and me were cool when I saw you last night Now we're in this state of emergency Oh y

发表于:2019-02-25 / 阅读(151) / 评论(0)

音乐咖啡厅

听歌学英语：ECHO (LET GO)-Breathe Carolina

Hideaway hide away, hiding from your call 我隐藏，我躲避，回避你的来电 Founda place, found a place, we could have it all 我寻觅，我找寻，探寻一片圣地 ButI wish I never followed innocent, innocent 但我希望自己从不循规

发表于:2019-03-11 / 阅读(328) / 评论(0)

听歌学英语

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a slice of bread

aberring

administrative duty

adoption of new technology

aristolochia cucurbitifolia