红宝石圆盘激光器

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(147) / 评论(0)

VOA常速英语2008年（四月）

天方夜谭英文故事：Return of Princess and Her Ruby

Long years ago, Zaman was the Prince of a small Arab kingdom. He went to a nearby forest with his Princess Badora for a camp. After the meals the Princess removed all her jewels to take rest in the tent. When the Princess put the jewels beside her, a

发表于:2018-12-12 / 阅读(170) / 评论(0)

一千零一夜英文故事

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(131) / 评论(0)

2013年VOA慢速英语(二)月

VOA常速英语2014--New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力

New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl

发表于:2018-12-16 / 阅读(116) / 评论(0)

VOA标准英语2014年(二月)

SSS 2008-09-17

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? We live in a nice neighborhood. Of the galaxy, that is. The sun is about halfway toward the outer edge of the Milky Way. But the sun may have migrated vast distances t

发表于:2018-12-24 / 阅读(159) / 评论(0)

Scientific American(九)月

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(145) / 评论(0)

2017年VOA慢速英语(七)月

工作如何

A:How's work today? 今天工作如何？ B:It's been a crazy day today.First, I was 1-hour late,you know,the traffic is really bad,Then I got yelled by my boss. 今天可真疯狂。我先是迟到了一

发表于:2019-01-03 / 阅读(113) / 评论(0)

英语抢先学

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(218) / 评论(0)

2005年NPR美国国家公共电台

中学英语课程标准词汇表（简易袖珍背诵版）D2

dial ［5daiEl］vt. 拨（电话号码） redial重拨 dialogue［5daiElC^］ (美 dialog) n. 对话 diamond ［5daiEmEnd］n. 钻石，金刚石；纸牌中的方块 diary［5daiEri］ n. 日记；日记

发表于:2019-01-09 / 阅读(173) / 评论(0)

英文语法词汇

北师大小学英语六年级上--unit5（2）

[00:02.71] [00:06.33]Listen to This [00:09.68]Write the number [00:12.85]1.This computer isn't working. [00:17.24]You should turn it on first! [00:20.87]2.I want to use the Internet. [00:25.15]You should ask your parents to help you. [00:29.55]3.Is t

发表于:2019-01-09 / 阅读(286) / 评论(0)

北师大版小学英语六年级上

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(200) / 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(170) / 评论(0)

2012年VOA慢速英语(一)月

VOA慢速英语2010年-EXPLORATIONS - After 50 Years, Lasers

STEVE EMBER: Im Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus with EXPLORATIONS in VOA Special English. This week, we tell about one of the most recognizable objects in science fiction the laser. And we tell how the laser has made its mark in the

发表于:2019-01-12 / 阅读(125) / 评论(0)

2010年VOA慢速英语(九)月

闭着眼睛飘单词四级词汇22

[0:0]discourage disgust disk dismiss [0:46.4036]disorder display disposal dispose

发表于:2019-01-16 / 阅读(172) / 评论(0)

闭着眼睛飘单词四级词汇

【英语语言学习】镭射器的历史

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 science of the future to eve

发表于:2019-01-24 / 阅读(204) / 评论(0)

英语语言学习

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(173) / 评论(0)

VOA常速英语2007年（十一月）

TED演讲:曝光政府腐败的战斗(3)

Well, that's not exactly the story, because the problem was that Parliament delayed and delayed releasing that data, 呵呵，但我讲述的并不是很完整的故事。因为问题在于，议会不断地拖延公布这些信息， and then they t

发表于:2019-02-13 / 阅读(142) / 评论(0)

TED演讲国际问题篇

【英语语言学习】万维网

ROBERT SIEGEL, HOST: These days, there's very little you can't find on the World Wide Web, but we have a story now about one important piece of the Web's own history that has gone missing, and no search engine will find it. NPR's Geoff Brumfiel repor

发表于:2019-02-16 / 阅读(161) / 评论(0)

英语语言学习

使用电脑必懂的53个英文单词和缩写

PC：个人计算机Personal Computer CPU：中央处理器Central Processing Unit CPU Fan：中央处理器的散热器(Fan) MB：主机板MotherBoard RAM：内存Random Access Memory，以PC-代号划分规格，如PC-133，PC-1066，PC-2700 HDD：硬

发表于:2019-02-18 / 阅读(181) / 评论(0)

实用英语

英语歌曲:Just Take My Heart

Mr. Big，1988年成立于美国，他们是为数不多的能唱民谣的重金属乐队，在他们的摇滚音乐中也有更多的布鲁斯成分。这首Just Take My Heart柔情满满，更偏于悦耳的pop metal旋律。 Just Take My Heart Mr

发表于:2019-02-25 / 阅读(174) / 评论(0)

好听的英文歌曲

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accounts of student progress