单词：laser lever
单词：laser lever 相关文章
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
VOA常速英语2008年（四月）
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
2013年VOA慢速英语(二)月
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
VOA标准英语2014年(二月)
再一次比较 (E) 与 (I) 的区别 发 (E) 与 (I) 的音时，脸部肌肉要放松，但发 (I) 时，嘴形微开，发 (E) 时，嘴形要再张开些。 bed (bEd) 床 letter (`lEtK) 信 lever (`lEvK) 杠杆 bid (bId) 打招呼 litter (`lItK) 垃
赖世雄美语从头学（美语音标）
B: Great! Are the charges for the gas, water and the electricity included in the rent? A: Yes, but theres a ninety dollars hold-up fee charges by the gas company. Thats refunded after three month. B: I see. Thanks a lot. Unit Nine Repairing pipeline
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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
2017年VOA慢速英语(七)月
Once upon a time there was a princess who was ever so proud: if any man came to woo her she would set him a riddle, and if he couldn't guess it he was laughed to scorn and sent packing. She also had it made known that whoever did guess the answer to
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This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Maybe your dad said, The harder you work for something, the more youll appreciate it. Well, father really did know best, because a new study finds that the
Scientific American(十一)月
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
2005年NPR美国国家公共电台
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
2013年VOA慢速英语(五)月
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
2012年VOA慢速英语(一)月
Tom is applying for a job as a signalman for the local railroad, and is told to meet the inspector at the signal box. The inspector decides to give Tom a pop quiz, asking, What would you do if you realized that two trains were heading towards each ot
趣味英语
What If... 如果怎么样 Tom is applying for a job as a signalman for the local railroad. 汤姆在应聘做地方铁路系统的信号员。 The inspector decides to give Tom a quiz, asking, What would you do if you realized that two trains were h
英语小达人
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
VOA常速英语2007年（十一月）
这两天，宝宝离婚事件引得大家都在讨论，男士们该娶什么样的老婆。于是，就有人说，娶妻娶贤娶德不娶色。其实，这个问题本不该由别人来提供意见，自己心里想要娶什么样的老婆就只有
英文语法词汇
乔治桑（George Sand）曾经说过 There is only one happiness in life, to love and be loved. （生命里只有一种幸福：爱与被爱。）正所谓一杯白水，一口干粮，只要爱人在我身旁，荒漠也会变成天堂！找到了那
英文语法词汇
这两天，宝宝离婚事件引得大家都在讨论，男士们该娶什么样的老婆。于是，就有人说，娶妻娶贤娶德不娶色。其实，这个问题本不该由别人来提供意见，自己心里想要娶什么样的老婆就只有
英文语法词汇
Idiom: Second wind ( get recharged ) Hit the book: Spearhead Test drive Mass produce Mechanics Commercialize In the long term Equip with Autonomous Online search giant Baidu Inc said on Monday that it has set up a new business unit to spearhead its a
趣味青春英语
HOW POTTS SAVED THE NIGHT EXPRESS Ray Stannard Baker 波茨挽救夜行快车 雷斯坦纳德贝克尔 The men who command our ships, pilot our airplanes, and run the great locomotives that pull our trains cannot be weaklings. 操纵帆船，驾驶飞机
美国小学英语教材6