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Robert Owen, a British mill-owner and reformer, treated private property, along with organised religion and marriage, as a social scourge. In 1825 he bought land for a farm-and-factory commune in Indiana. It attracted farmers, artisans and intellectu
经济学人文艺系列
By Carol Pearson Washington 05 May 2008 High definition TV provides sharper images, but high definition imaging now goes beyond television. VOA's Carol Pearson reports on high definition eye glasses.
VOA标准英语2008年（五月）
A China-made wearable robot that can assist disabled people with walking is expected to enter the market in one to two years, according to its developer. 我国已自主研发出一款可以帮助残疾人行走的可穿戴机器人，其研发方称，
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Cameras were once big and bulky. Today,really good cameras fit in your pocket. And now, researchers at Cornell havedeveloped a camera thats just a half-millimeter on each side and a hundredthof a millimeter thick. The lens-less device is called a Pla
Scientific American(七)月
Brandy--Definition I dropped all that baggage Let go of that habit The pain you can have it Now Im content with me Im lovin this kid And I gotta admit Feels like the beginning Now Im content with me It's hard to explain it Been through it, you name i
E乐吧
Live a single day on planet Earth, or anywhere else in the universe for that matter, and you will experience the natural phenomenon of heat conduction, which is the term used to describe the natural flow of heat from warmer objects to cooler ones. Yo
英语时差8，16