相關OysterWhatisanOyster的文學知識

問題詳情：OysterWhatisanOystercard?Oysteristheeasiestwaytopayforjourneysonthebus，Tube，tram，DocklandsLightRailway(DLR),LondonOvergroundandNationalRailjourneysinLondonYoucanstoreyourtravelcards,Bus&TramP...