Railway is a nation's important infrastructure, and also the big artery of national economy and the backbone of the transportation system.

铁路是国家重要的基础设施、国民经济的大动脉、交通运输体系的骨干。

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The railroad is important infrastructure in our country, and is playing the backbone role in the synthesis transportation system.

铁路是我国的重要基础设施，在综合运输体系中起着骨干作用。

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The fund is the primary source of federal money for transportation infrastructure and the interstate highway system.

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Silver and copper are smaller markets, but their adherents argue that the industrial demands for the shiny stuff by nations that must build out their infrastructure products such as the fast speed transportation system in China or the ports of India, Thailand another emerging markets clearly suggest a shortage of silver and copper, possibly iron ore as well.

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For local transportation system managers, inspecting and ensuring the structural integrity of standing infrastructure is the top priority following a disaster.

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