Wecannotlivealifewithouttravelling.Thefastestwayoftrave...
问题详情：Wecannotlivealifewithouttravelling.Thefastestwayoftravellingisbyair.Withaplaneonecantravelinonedaytoplaceswhichittakesamonthormoretogettoahundredyearsago.Travellingbytrainisslowerthanbyplane,b...