单词：pteraspids
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By Nico Colombant World Health Organization officials say the northern Nigerian state of Kano will start a catch-up polio immunization campaign Saturday, ending an 11-month religious-led boycott. The
VOA2004（下）--健康科技
Do you have trouble keeping up with your things? Are you constantly misplacing items and wasting your precious time hunting for them? Then the Lapa may be what you need. Lapas communicating The Lapa is a device that you attach to something you don't
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Do you have trouble keeping up with your things? Are you constantly misplacing items and wasting your precious time hunting for them? Then the Lapa may be what you need. Lapas communicating The Lapa is a device that you attach to something you dont w
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美国 Kidsongs 英语儿童歌曲
By Cynthia Kirk ENVIRONMENT REPORT -May 31, 2002: Coqui Frogs Invade Hawaii This is the VOA Special English ENVIRONMENT REPORT. Experts say the American state of Hawaii has been invaded by a small fro
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