目前正是暑运繁忙时候，货运列车也在加紧运输生活必需品等各类物资。暑运又值汛期，全国多地强降雨频繁，穿行在风雨中的货物列车能“滴水不漏”地将粮食、家电等干爽完好地送往目的地，它要闯过几道关、秘诀是什么呢？
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