physical warming-up exercise
physical warming-up exercise
身体热身运动
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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On physical education and extra-curricular activities to prepare before the warming-up, attention should be paid to exercise when not to dramatic collision, so as not to be knocked down or fall.
上体育课和课外活动前要作好准备活动，运动时要注意不要剧烈碰撞，以免撞伤或摔伤。
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