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这种情况每年造成300多万人意外死亡，知道这个方法后百分之七八十都能救回来
source link: http://video.weibo.com/show?fid=1034%3A4294952428211308
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这种情况每年造成300多万人意外死亡，知道这个方法后百分之七八十都能救回来
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