OysterWhatisanOyster的精选

问题详情：OysterWhatisanOystercard?Oysteristheeasiestwaytopayforjourneysonthebus，Tube，tram，DocklandsLightRailway(DLR),LondonOvergroundandNationalRailjourneysinLondonYoucanstoreyourtravelcards,Bus&TramP...