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By Lisa Schlein Geneva 31 March 2006 Women fetch water in drought-hit Dubluk, Ethiopia The U.N. Children's Fund, UNICEF, says Ethiopian children are facing an epidemic of lethal diseases. UNICEF says
发表于:2018-12-16 / 阅读(86) / 评论(0)
2006年VOA标准英语(三月)
This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? February 28th is International Sword Swallowers Awareness Day, according to practitioner Dan Meyer, who recently demonstrated the technique at the AAAS meeting in Chic
发表于:2018-12-24 / 阅读(64) / 评论(0)
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A new flexible smartphone design could change the way users interact with their devices. ReFlex, developed by researchers at Queen's University, uses 'bend sensors' to control app interactions, and simulates physical forces through detailed vibration
发表于:2019-02-17 / 阅读(59) / 评论(0)
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