上体育课时，老师让我们练习铅球，一拿没拿住，铅球砸到脚背上了，但没有砸碎骨头。但是，胶背有一块儿青了 体育课上，只见小刚用力将铅球斜上方推了出去在空中运动了一段弧...

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先用热水敷，在抹碘酒。尽量少活动

用冰，冰一下，可消肿

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