使用多种运输方式的运输也被称为联运。
Transportation using multiple transportation means is also called combined transport.
如何提高运输效率，构建一个多种运输方式紧密协作的多式联运系统，成为亟待解决的问题。
How to improve the efficiency of transportation and build a system of multi-modal transport system turns into an urgent problem.
如何提高运输效率，构建一个多种运输方式紧密协作的多式联运系统，成为亟待解决的问题。
How to improve the efficiency of transportation and build a system of multi-modal transport system turns into an urgent problem.
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