求翻译：国家教育部规定就中小学生参加冬季长跑有一个规定即小学生1000米，中学生1500米，高中生2000米。对于这些，有些人支持，他们觉得可以强身健体，提高学习效率，更注意了体育锻炼。但是有些人反对他们觉得这影响学习而且有可能会受伤，更重要的是运动要因人而异。我认为运动是有利于我们的，要适时适度的利用好时间来锻炼。是什么意思？

Ministry of national education provided to pupils of primary and middle school students attend the winter running there is a provision that is 1000 meters, 1500 meters of middle school students, high school students of 2000 meters. For these, some support, they think they can keep fit, study, more attention to physical exercise. But some people oppose they feel the impact learning and may be injured, more important is the movement to vary. I think that exercise is beneficial to us, to moderate use of time at an appropriate time to exercise.