求翻译：首先，他们可能会损害学生的身体健康和心理健身。此外，令人忧虑的许多教师的是，他们也可能对学生的学业表现的负面影响。总括来说，从来没有我们可以视而不见，这些现象。是什么意思？

First, they may damage the student's physical health and mental fitness. In addition, many teachers worrying that they might academic performance of students the negative effects. In conclusion, we can never ignore these phenomena.

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First, they possibly can impair student's health and the psychological fitness.In addition, the disquieting many teachers are, they also possibly to student's studies performance negative influence.Sums up, we have not been possible to look but not see, these phenomena.

First, they could hurt students ' physical and mental fitness. In addition, worrying many teachers is that they may also be negative effects on the students ' academic performance. All in all, we can never ignore, these phenomena.

First, they could hurt students ' physical and mental fitness. In addition, worrying many teachers is that they may also be negative effects on the students ' academic performance. All in all, we can never ignore, these phenomena.