单词：glaciologist
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听广告学英语:Richon Aficio Copier 理光Aficio复印机 原文：It took a lot of intelligence for Richon to come up with a digital copier that could copy, fax and print. If Leonardo Civincci were around today, would he not be working for us? That's why Ric
听广告学英语
This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute. Biologists, traditionally track migrations by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted wi
Scientific American(六)月
Bangladesh has compiled a new voters list that is expected to pave the way for fair elections scheduled to be held later this year. As Anjana Pasricha reports from New Delhi, past elections in the country have been marred by allegations that ruling
VOA标准英语2008年（七月）
By Carol Pearson Washington, DC 08 November 2006 watch Heart Stent report Heart stents are lifesaving medical devices that help prevent heart attacks. Most of these stents are coated with various drugs, but mounting data suggest drug-coated stents c
2006年VOA标准英语（十一月)