单词:stitch-and-seam welding
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Education Report - A Social Network Aims to Speed Up Progress in Science This is the VOA Special English Education Report. A few years ago, a university researcher was having problems with an experiment that involved medical imaging. His adviser and
UNIT 5 What color is it? [00:05.69]Section A Activity 1b. [00:11.55]Listen to the conversations [00:15.78]and then match the letters with their colors. [00:20.92]Conversation 1 [00:24.48]A:What's this,Wendy? [00:27.82]B:It's a letter W. [00:31.58]A:W
By Nancy Steinbach Broadcast: October 1, 2003 This is Faith Lapidus with the VOA Special English Health Report. Scientists in Iceland say they have identified the first gene linked to common forms of
By Robert Raffaele Washington 29 April 2008 For the first time, scientists have used gene therapy to dramatically improve sight in people with a rare, inherited form ofblindness. Researchers in Philadelphia and London are calling the results a milest
By Stephanie Ho Washington 24 August 2006 The MacArthur Foundation, better known for offering so-called genius grants each year to individuals, will now recognize small non-profit organizations. The groups are diverse and are in different countries,
ROME, Dec. 9 (Xinhua) -- Juventus defender Leonardo Bonucci apologised for his embarrassing dive following his side win 1-0 at Palermo on Sunday. Bonucci was warned by the referee when he fell to the ground after being challenged by goalkeeper Samir