如果每半个Million的车在那几年之内死了1个驾驶人,那么数字就是2,统计意义不大。
你读读原文吧。
如果每半个Million的车在那几年之内死了1个驾驶人,那么数字就是2,统计意义不大。
你读读原文吧。
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