2019年1月26日 星期六

中新网社会新闻: 1600中学生“角逐”清华冬令营

中新网社会新闻
 
1600中学生"角逐"清华冬令营
Jan 27th 2019, 00:28

  考察团队协作能力 现场制造滑翔机模型  1600中学生"角逐"清华冬令营

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