2016年，美国八年级学生中有十分之一的人每周会拿出40个小时或更多的时间玩电子游戏。

One out of ten American 8th grade students in 2016 spent 40 hours a week or more playing video games.

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陈曾经自己折纸，直到遇到了李昌南。李昌南是他同校的八年级学生，也喜欢折纸。

Chen used to fold paper himself until he met Li Changnan, an eighth grader in his school who also loved folding paper.

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同期埃及八年级学生的数学和科学成绩也有所下降。

And in Egypt, eighth graders' scores dropped in both math and science in the same period.

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