求翻译：我校在中学生课堂注意力进行了调查 ,能够集中注意力的有百分之40,不能集中注意力的有百分之60,注意力不集中的原因,课堂干扰百分之30,睡眠不足与疲劳百分之70是什么意思？

Attention in secondary school classroom I conducted a survey to focus the attention of 40 percent, can not concentrate for 60 percent, can not concentrate because, 30 percent of classroom disturbance, lack of sleep and Fatigue 70%

Secondary school students in my school classroom attention, carried out a survey to be able to concentrate on the 40 % of unable to concentrate, a 60 % and lack of concentration, and the reasons for 30 % classroom disruptions, lack of sleep and fatigue 70 %

My school has carried on the investigation in the middle-school student classroom attention, can focus the attention to have 40%, cannot focus the attention to have 60%, the attention not centralized reason, the classroom disturbs 30%, sleep insufficient and weary 70%

College conducted surveys in students ' classroom attention, can concentrate about 40, distracted about 60, reasons for focusing his attention, class interference 30 per cent, insufficient sleep and fatigue by 70

I conducted a survey of school classroom in middle school students attention, can now focus 40, cannot concentrate plus 60, attention deficit disorder causes, classroom noise of 30 per cent, lack of sleep and fatigue of 70 per cent