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大家從這個(gè)斷面上能看出什么,,討論討論 |
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點(diǎn)評(píng)
那個(gè)是地面嗎,?
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點(diǎn)評(píng)
猜測(cè)是從圖片的右側(cè)開(kāi)始斷裂的,,折斷
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