单词：paleophytologist
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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
By Alisha Ryu Nairobi 19 June 2008 Somali Islamist opposition leader Sheik Sharif Sheik Ahmed says his group signed a U.N.-mediated peace agreement with Somalia's interim government last week because the accord provides a specific timetable for an E
VOA标准英语2008年（六月）
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)
莎拉布莱曼的歌声充满了个人特质，让人充满迷惑与想像，就像航行在海的水手听见萝蕾莱的吟唱般，成为一种方向感的依归，一种心灵折服的美声女神。她的音质纯净、通透，演唱起不食人间烟火的角色时格外惹人怜惜。 英文歌词 ： We skipped the light fandango Turned car
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[00:00.00]1 HEATHER:I used to rollerskte all the time. [00:28.29]I loved it when I was little.Did you ? [00:31.14]KEVIN:No.I went straight from my pram to a surfboard. [00:35.81]I used to live in the ocean.No wheels required. [00:40.25]2 HEATHER:Well
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