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青少年發明家比賽2008 第一回合
3:49
Added:
3 years ago
From:
imechehk
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這是非常有趣的比賽，對鼓勵下一代年輕人將來成為機械工程師絕對
有正面的影響。
rickykan
3 years ago
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這是非常有趣的比賽，對鼓勵下一代年輕人將來成為機械工程師絕對有正面的影響。
rickykan 3 years ago