单词：laser channal marker
单词：laser channal marker 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）
marker phrases This programme was first broadcast in 2001. This is not an accurate word-for-word transcript of the programme. ANNOUNCER: Its time for Academic Listening - a series for students at English-speaking universities. For more on the struct
英语讨论
This is the VOA Special English Health Report. Cardiovascular disease is the world's leading cause of death. It includes heart attack, stroke and high blood pressure. Over the years, researchers have identified several substances in the blood that c
VOA慢速英语2009年（七）月
The tutor handed the black marker to his student. She was learning English. She constantly spoke to him in Russian, even though he hardly knew net from da. She wrote the two contractions for he is not on the whiteboard. He said, Very good. She smiled
英文短篇故事（纽约）
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）
Perfume and new marker 香水和麦克笔 词汇扫描 Instructional assistant 指导员助理 Second-graders 二年级生 Perfume 香水 Marker 麦克笔 英文原文 As an instructional assistant for a public school, part of my job involves teachin
英语笑话（MP3+文本）