最近的研究表明在美国和西欧多达80%的小学生有近视问题。
Recent studies suggest that up to 80 percent of schoolchildren in the United States and western Europe are nearsighted.
研究结果堪忧：勤奋学习所花的时间和儿童近视问题有密切关联，近视可能引发严重眼疾。
That's the concern raised by research that reveals alarmingly strong links between time spent studying hard and childhood shortsightedness - myopia - that can lead to serious eye diseases.
严重的眼疲劳会导致长期的头痛，头部，颈部和上发背的肌肉疼痛，也可能会引起一个长期的问题近视。
Serious eye strain can lead to persistent headaches, muscle pain in the head, neck and upper back, as well as long term problems like myopia.
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