激光器杠杆

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(144) / 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(129) / 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(114) / 评论(0)

VOA标准英语2014年(二月)

美语从头学赖世雄美语音标 14

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

发表于:2018-12-16 / 阅读(203) / 评论(0)

赖世雄美语从头学（美语音标）

移动英语－精选对话2级第 3 部分-05

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

发表于:2018-12-25 / 阅读(122) / 评论(0)

移动英语

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(140) / 评论(0)

2017年VOA慢速英语(七)月

The Clever Little Tailor

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

发表于:2019-01-06 / 阅读(220) / 评论(0)

阅读空间

SSS 2010-11-03

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

发表于:2019-01-08 / 阅读(177) / 评论(0)

Scientific American(十一)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(217) / 评论(0)

2005年NPR美国国家公共电台

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(191) / 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(164) / 评论(0)

2012年VOA慢速英语(一)月

The Grounded Conductor

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

发表于:2019-01-26 / 阅读(200) / 评论(0)

趣味英语

英语小达人 214 What If...

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

发表于:2019-01-28 / 阅读(154) / 评论(0)

英语小达人

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(165) / 评论(0)

VOA常速英语2007年（十一月）

自行车词汇

Bicycle 自行车 Tire 轮胎 Rim 轮圈 Saddle 坐垫 Seat post 座杆 Seat post clamp 座杆束子 Rear brake 后刹车 Front brake 前刹车 Seat stay 后上叉 Chain stay 后下叉 Seat tube 座管 Top tube 上管 Down tube 下管 Freewheel 飞轮 Rear Ends/Dropouts 后叉端 Deraill

发表于:2019-02-05 / 阅读(140) / 评论(0)

英文语法词汇

英语新词：男士们该娶什么型的老婆呢?

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

发表于:2019-02-14 / 阅读(125) / 评论(0)

英文语法词汇

爱是love 与“爱”有关的英语词汇

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

发表于:2019-02-17 / 阅读(176) / 评论(0)

英文语法词汇

英语热词：男士们该娶什么型的老婆呢？

发表于:2019-02-18 / 阅读(125) / 评论(0)

英文语法词汇

趣味青春英语电台第336期:Second wind

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

发表于:2019-02-23 / 阅读(152) / 评论(0)

趣味青春英语

美国小学英语教材6:第80课波茨挽救夜行快车(1)

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

发表于:2019-03-04 / 阅读(226) / 评论(0)

美国小学英语教材6

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学英语单词

Balance between supply and demand