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快速清理黑板的小妙招
更新时间: 2021-05-07 17:57:18  

1、换一个干净的黑板擦或者清洗一下原先的黑板擦;

2、擦干净粉笔字后,用干净的湿毛巾擦一遍,如果一遍擦不干净就再搓干净毛巾擦第二遍;

3、用毛巾擦过后,用旧报纸揉成团,再没干的黑板上擦拭,直到把水分擦干即可。

关键词: 快速 清理 黑板

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