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William Kamkwamba:
威廉‧坎寬巴(William Kamkwamba)談論建造風車

TEDGlobal 2007 · 04:12 · Filmed Jun 2007
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To power his family's home, young William Kamkwamba built an electricity-producing windmill from spare parts and scrap — starting him on a journey detailed in the book and film "The Boy Who Harnessed the Wind." Full bio
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