陈旧的手稿已风化成一堆碎片和纸屑。

The old manuscripts had been disintegrated into a pile of fragments and dust.

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但因保管不力，多年藏于千年古树洞，已现风化，亟需权威专家鉴定，交由专业人员收藏保管。

But it is weathering because of poorly kept and hidden in the tree hole too many years. So it needs the authoritative appraisal and to be kept by professional.

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