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Watch Later 16:48

5.2_1_科學馬戲團

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5.2_1_齊來看看「光的反射」

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5.2_1_齊來看看「奇妙的顏色」

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5.2_2_齊來聽聽「聲音的世界」

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5.2_2_噪音污染

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5.2_3_用電知多少

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5.2_3_奇妙的電

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5.2_3_科學與科技-安全篇

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5.2_4_怎樣的問題怎樣的探究

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