[问题] 莫名渍的清洁

楼主: Winne123 (Winne)   2025-04-27 13:27:45
https://i.imgur.com/LsfLQFe.jpeg
https://i.imgur.com/F0kLqTw.jpeg
想请问像这样莫名的渍,不知成因。可以怎么清?我已试过含氧漂白素及过碳酸钠,都不
为所动?先谢谢。

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