Objective To study effect of family environment on children with poor academic achievement.
目的探讨家庭心理环境对学习不良儿童的影响。
In teenagers and young children, lack of sleep can result in attention disorders and poor academic performance.
对于青少年和儿童，睡眠不足会导致注意力混乱，学习成绩差。
In teenagers and young children, lack of sleep can result in attention disorders and poor academic performance.
对于青少年和儿童，睡眠不足会导致注意力混乱，学习成绩差。
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