Kuv nyuam qhuav tau yuav ib phau ntawv muaj npe Dab Tsi ntawm Lub Npe? Keeb kwm ntawm Chaw Nres Tsheb npe ntawm London Underground. [1] Nws muaj kev cuam tshuam nrog keeb kwm ntawm txhua 270 cov npe ntawm London Underground station (tube network). Flicking dhau cov nplooj ntawv, nws tau pom tseeb tias cov npe tau muaj heev ...