Canal Construction(15.运河建设)

ModerncanalprovideimportanttransporthighwaysthroughoutEuropeand,toalesserextent,NorthAmerica.TheriversRhineandMosellefeedandxtensivecanalsysteminGermanythathasconnectionstotheDutch,Belgian,andFrenchnetworks.AnewmajorwaterwayiscompletedtoconnecttheRhinewiththeBlacksea,viatheriversMainahdDanube,andagre ......(共5841字)[阅读本文]>>

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