Nowadaysitismoreconvenientandeasierforpeopletotraveltoothercountriesisitdevelopmentapositiveornegativeeffect参考范文NeverbeforewastravellingtoaliencountriessoconvenientandpopularasinthiscenturyThisphenomenonispartiallyattributedtoimprovedtechnologyandcheapflightticketsFacingthistravelfrenzysomeareconcernedthatitwillbringabouttoomanysideeffectswhilstothersinsistthatisshouldbesupportedandmaintainedAdmittedlycrossbordertravelhasmoredownsidesthanoneFirstlythecarbondioxideplanesemittedisreportedtobedispr