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教室照明这件事，很多学校装修时没太当回事。天花板装几盏灯管，黑板前加两盏射灯，就算交差了。结果学生下午上课开始犯困，眼睛干涩、注意力涣散，视力一年比一年差。更隐蔽的问题是：灯光
https://www.alighting.cn/news/20261007/179606.htm2026/10/7 18:53:48
