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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
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
As It Is - Mapping Foreign Language Speakers in the US绘制一张在美国外语使用者的地图 Hello again and welcome to As It Is, from VOA Learning English! Im June Simms in Washington. The United States is a lot more ethically and culturally
2013年VOA慢速英语(八)月
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）
For commuters in a hurry it can be hugely frustrating to find yourself queuing to get to the platform exit or to change lines after getting off a packed train. 对于行色匆匆的通勤者来说，在站台出口排队、从拥挤的车厢下车后还
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