<classify> Kodi ndi chifukwa chiyani zogwiritsa ntchito pamayendedwe zimakhala ndi madandaulo ochuluka, chifukwa chiyani zimalephera tsiku ndi tsiku? Kapena akatswiri opanga zimenezi sadziwa? Kapena china chake chachikulu chofunikira kwambiri chikuchitika?  <topic>: travel 