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威廉 凯门卡巴自制的风力发电机
3,924,362 views |
William Kamkwamba |
TEDGlobal 2007
• June 2007
Read transcript
当他仅仅14岁的时候，马拉维发明家威廉 凯门卡巴效仿他在图书馆里发现的草图，用废弃的备件给他家做了一个风力发电风车。
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