Long runs are essential to the training distance runners because they enable the body to adapt to running greater distances safely and efficiently.
长跑对于训练跑步者十分必要，因为它能够使机体适应安全和高效的长距离奔跑。
In the information age, in order to save training costs, improve quality of training; distance training courseware should be vigorously developed.
信息时代，为节省培训费用，提高培训质量，应大力开发远程培训课件。
In the information age, in order to save training costs, improve quality of training; distance training courseware should be vigorously developed.
信息时代，为节省培训费用，提高培训质量，应大力开发远程培训课件。
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