![Transportationandcommunicationnetworksbringpeopletogeth...]( "Transportationandcommunicationnetworksbringpeopletogeth...")
- 問題詳情：Transportationandcommunicationnetworksbringpeopletogether.Yetsometimespeoplethemselvescreatebarriers(障礙)totransportationandcommunication.Insomecountries,lawsstoppeoplefrommovingfreelyfromplacetoplace.Overthecenturies,manygroupsofpeoplehaveb...
- 10465
中文谷