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EP46|鉛筆-裡面明明沒有鉛,為什麼還叫鉛筆?

June 12, 2026 · 15 min

Show notes


鉛筆裡真的有鉛嗎?為什麼石墨可以寫字?
這集博士爸爸帶著賢賢和彤彤一起探索鉛筆的祕密
從石墨、煤炭一路聊到鑽石
原來它們都和同一種元素有關!
快來認識每天都在用
卻不一定了解的小小鉛筆吧!

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