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Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头，盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

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

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

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BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

SSS 2008-02-25

Transcript This is Scientific American's 60-Second Science, I am Cynthia Graber.This will just take a minute. Physicists at the Brookhaven National Laboratory have been able to send information ahead of particle beams racing at nearly the speed of li

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

Improve Your Focus with the Pomodoro Technique

If you are like many language students, you might have a problem with procrastination. Perhaps you are slow to do homework or study for a test. Maybe you do not like to study or you become distracted while studying. Whatever the case may be, learning

SSS 2011-10-07

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

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This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

22. Job Technique

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver

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

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

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Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为，我是说，耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

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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

VOA标准英语2008年-New Technique Revolutionizes Surgery

By Carol Pearson Washington 08 January 2008 New technology makes surgery safer, shortens recovery time and leaves no scars. Both physicians and patients are pleased with the results. VOA's Carol Pearson has more. Maria Viruet recently had her gallbla

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

Job Technique

Vacationing on the island of Oahu, we were waiting in our tour bus for some stragglers to show up. A man, obviously not with our group, approached the bus and was about to board. How would our driver handle the situation, we wondered. Straight-faced,

科学美国人60秒 SSS 诺贝尔物理学奖颁给激光控制实验者

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

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知识点讲解： 1、中文意思一样 insist persist 2、两个词长得像 special specialty 3、长得像+中文意思一样 technique technology ① Technique 方法、技巧 Hes a great basketball player. He has flawless technique. 他是位很

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The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen