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1. Oxford American Dictionary

   ton-mile

   • IPA[ˈtən ˌmīl]

   美式

   • n.
     one ton of freight carried one mile, as a unit of traffic.

   • noun: ton-mile, plural noun: ton-miles

2. • 更多解釋

   ton-mile

   • n.
     one ton of goods carried one mile, as a unit of traffic.

   Oxford Dictionary