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Phát minh là cho đi
829,510 views |
Dean Kamen |
TED2002
• February 2002
Read transcript
Nhà phát minh Dean Kamen đưa ra lập luận của ông về Segway và đưa ra những ý tưởng lớn tiếp theo của ông (năng lượng di động và lọc nước cho các nước đang phát triển).
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