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ចំណាយពេលតិចជាង ១ នាទីដើម្បីចុះឈ្មោះបន្ទាប់មកអ្នកអាចរីករាយនឹងចំណងជើងភាពយន្តនិងទូរទស្សន៍គ្មានដែនកំណត់។

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Climbing Redwood Giants 2009 ការចូលប្រើដោយឥតគិតថ្លៃគ្មានដែនកំណត់

Climbing Redwood Giants 2009 ការចូលប្រើដោយឥតគិតថ្លៃគ្មានដែនកំណត់

They are giants—stretching more than 300 feet above the ground, with hidden gardens and mysterious predators thriving within their canopy. National Geographic reveals the unexplored environment of the California redwoods in an epic, year-long exploration. Obsessive redwood climber Steve Sillett of Humboldt State University explores their massive crowns, discovering new record-breaking trees, while escaping falling branches and crashing trees in the process. Down below, National Geographic Explorer-in-Residence Mike Fay charts the redwood range to size up the past and future of these primeval trees threatened in 21st century California.

ប្រភេទ:

ខាស:

នាវិក:

ស្ទូឌីយោ:

ពេលរត់: 46 នាទី

គុណភាព: HD

ការដោះលែង: Sep 29, 2009

ប្រទេស:

ភាសា: English

ពាក្យគន្លឹះ :
ចាក់ផ្សាយខ្សែភាពយន្តនិងទូរទស្សន៍រាប់ពាន់ដោយឥតគិតថ្លៃ។
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