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神奇的橋

神奇的橋

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人工智能朗讀：

說(shuō)起橋，大家再熟悉不過(guò)了，造橋的材料有多種多樣，有木頭，有石頭，還有鋼鐵。這些材料大家都耳熟能詳，但是，你還聽(tīng)說(shuō)過(guò)別的材料造的橋嗎？

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