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[VOA自然探索] Explorations - Four People Who Are Making a Difference in the Nation (2009-01-28 09:27:39)
[VOA自然探索] Adventurer Steve Fossett Set More Than 100 World Records (2009-01-21 09:16:58)
[VOA自然探索] Robert Edison Fulton Rode Around the World on a Motorcycle (2009-01-14 10:17:12)
[VOA自然探索] Explorations - Yosemite: One of the Most Famous National Parks in the US (2009-01-07 09:35:05)
[VOA自然探索] Explorations - Protecting the Culture of Ancient Native Americans (2008-12-31 10:06:55)
[VOA自然探索] Explorations - Four More People Who Are Making a Difference (2008-12-24 09:37:15)
[VOA自然探索] Under the Sea, Under the Fake Sea: Visiting Some Popular Aquariums (2008-12-17 10:15:34)
[VOA自然探索] Carl Sagan Helped People Understand Our Planet and the Universe (2008-12-10 09:25:31)
[VOA自然探索] Explorations - Ships, Explorers, Pirate Attacks and Wars (2008-12-03 09:49:56)
[VOA自然探索] Explorations - Four More People Who Are Making a Difference (2008-11-26 09:49:34)
[VOA自然探索] Explorations - Visiting Seven of America’s Natural Wonders (2008-11-19 09:35:57)
[VOA自然探索] Explorations - Diamonds Are a Multi-Billion Dollar Business Around the World (2008-11-12 09:40:48)
[VOA自然探索] Explorations - A Trip Along the Potomac River, One of America’s Most Historic Wat (2008-11-05 09:35:46)
[VOA自然探索] Explorations - Jeanne-Claude Helps People See Their Surroundings New Ways (2008-10-29 09:30:24)
[VOA自然探索] Explorations - Camping in America's National and State Parks (2008-10-22 09:37:52)
[VOA自然探索] Explorations - Graham Hawkes Builds Submarines That 'Fly' to the Ocean's Depths (2008-10-15 09:14:22)
[VOA自然探索] Explorations - People Who Are Making a Difference in the World (2008-10-08 08:51:20)
[VOA自然探索] Explorations - National Cryptologic Museum Is Filled With Secrets of the Past (2008-09-24 09:43:11)
[VOA自然探索] EXPLORATIONS - Entrepreneurs Change the World (2008-09-17 08:58:46)
[VOA自然探索] Shadow Wolves Find and Arrest People Trying to Bring Drugs Into US (2008-09-10 09:39:02)