北京市育英中学昨天上午9点半，正值北京市育英中学课间操(exercise between classes)时间，几乎所有的同学都在操场新闻英语：北京育英中学高二女生裸身跳楼身亡上。
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But setting-up exercise during break between classes is one activity of all the aimed, organized activities in school. School is an important place to imply education.
但是课间操又是学校有组织、有目的活动之一，学校是实施教育的重要场所，学校内的所有活动都具有教育色彩。
The difference between what I do and what these ineffective obedience classes do is that once the dog has learned an exercise with markers I add distractions.
我的做法和服从训练课上的做法不同之处在于一旦狗儿通过标记法学会了某个练习，我就加入干扰。
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