（二）在铁路、城市轨道交通线路上放置障碍物，或者故意向列车投掷物品的；
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between different operating systems.，更多细节参见heLLoword翻译官方下载
Full training can take a long time, so although some resident doctors may have only recently finished medical school, others could have more than a decade of practical experience and be responsible for most aspects of care.