还可能出现肛周表皮脱落。
根表皮脱落时，外皮层以同样生长方式代替脱落的表皮。
The exodermis cell takes the place of epidermis cell with the same way when epidermis fall off.
有很多建筑存在质量问题，比如房屋质量，漏水，长霜，房屋表皮脱落。
Many buildings have quality problems. Such as the common problems of housing quality, water leakage, frosting and off-painting.
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