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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Warming up is essential to prepare your body for strenuous activities and to minimize the risk of injury.

热身准备是必不可少的剧烈活动，您的身体，并尽量减少受伤的危险。

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I just started this year warming up with my IPOD music. I find it easier to focus on the game and kind of tune-out all of the other pre-game activities on the court during warm-ups.

我是这个赛季才开始在热身的时候戴着IPOD听音乐的，我觉得这样可以让我更容易地集中精神到比赛上来，而且还可以把热身时场上进行的其他活动隔开。

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