泡沫绝缘

Shuttle1 Investigation

Broadcast: May 10, 2003 By Cynthia Kirk This is the VOA Special English program, In the News. Investigators say they now believe they know what caused the American space shuttle Columbia to break apar

发表于:2018-12-07 / 阅读(47) / 评论(0)

VOA2003（上）-科技导航

Scientists: Ozone-Eating Chemical Mysteriously Rising

Scientists have found that levels of a now-banned chemical are rising again in Earths atmosphere. The chemical is called CFC-11. It is the second most common kind of CFC, short for chlorofluorocarbon. Chlorofluorocarbons were once widely used in many

发表于:2019-01-03 / 阅读(54) / 评论(0)

2018年VOA慢速英语(五)月

Astronauts Take a Walk in Space

Broadcast: Apr 09, 2003 Two U.S. astronauts took a spacewalk Tuesday to perform exterior maintenance on the International Space Station. It was the last opportunity to fix hardware while the outpost h

发表于:2019-01-03 / 阅读(88) / 评论(0)

VOA2003（上）-科技先知

NASA Analyzes More Evidence in Shuttle Disaster

Broadcast: Feb 07, 2003 U.S. space agency officials confirmed Friday that they are analyzing military photographs that appear to show damage to the space shuttle Columbia shortly before it disintegrat

发表于:2019-01-03 / 阅读(48) / 评论(0)

VOA2003（上）-科技先知

CNN 2009-07-17

Good morning, I'm Melissa Long here at the CNN center in Atlanta. It's Thursday, July 16th and here's a look at some of the stories that are happening NOW IN THE NEWS. Judge Sonia Sotomayor will begin a final round of questioning from senators this

发表于:2019-01-07 / 阅读(65) / 评论(0)

CNN2009年(七)月

AP 2010-02-19

1. Toyota has announced it will recall more than 400,000 Prius and other hybrid vehicles around the globe to fix brake problems. This recall is the latest in a string of embarrassing safety problems at the world's largest automaker. This recall invol

发表于:2019-01-11 / 阅读(111) / 评论(0)

美联社新闻一分钟2010(二月)

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