问题描述：
He Xiaopeng spends most nights and weekends behind a desk with his nose in a book,翻译
this is the only chance for them to exercise，翻译
in bejing alone,one in five primary syudents is too fat
young students
this is the only chance for them to exercise，翻译
in bejing alone,one in five primary syudents is too fat
young students
问题解答：
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