【導(dǎo)讀】trainsarenotair-conditioned.journey.farecosts£ifusingonlybuses,thefareiscappedat£perdayforOyster. HSI.visedachangeof5"Goabroad,"hesaid."ButI'mnotgoodatforeign. languages,"saidMr.Black."Itdoesn'tmatter,"saidthedoctor."Itwon't6you