![Transportationandcommunicationnetworksbringpeopletogeth...]( "Transportationandcommunicationnetworksbringpeopletogeth...")
- 问题详情：Transportationandcommunicationnetworksbringpeopletogether.Yetsometimespeoplethemselvescreatebarriers(障碍)totransportationandcommunication.Insomecountries,lawsstoppeoplefrommovingfreelyfromplacetoplace.Overthecenturies,manygroupsofpeoplehaveb...
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