大宗货物运输是铁路运输的主要内容之一。
Mass freight transportation is one of the main tasks of railways.
世界干散货运输船队在世界海运船队中占有极其重要的地位，特别是在大宗货物运输方面。
The world bulk fleet plays a significant role in the world shipping, especially in the large amount cargo shipping.
西南航空--这个稍微有些复杂，因为牵涉到大型喷气式客机、联邦航空局、大宗货物运输等等。
Southwest airlines -- This is a little more complicated because it involves jumbo jets and the FAA and drink carts and such, but at the start Southwest was a still pretty simple idea.
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