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رحلة جوية على أجنحة شمسية
895,884 views |
بول ماكريدي |
TED2003
• February 2003
Read transcript
بول ماكريدي -- مصمم طائرات ، مهتم بالبيئة ، وعاشق للطيران -- يتحدث عن حياته المهنية
technology
design
invention
business
flight
energy
drones
solar energy
renewable energy
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