Czech sentences:cz: "prd krt skrz drn, zprv zhlt hrst zrn. "en: "a mole farted through grass, first swallowing a handful of grain. "cz: "chrt pln skvrn vtrhl skrz trs chrp v čtvrť krč. "en: "a greyhound full of stains burst through a cluster of cornflowers in the neighborhood of krč. ". These are actually not tongue twister for native czech speakers but i can imagine they can appear as such for foreigners. It is very unusual structure - definitely not used in day to day basis nevertheless grammatically legit.
This old footage of siren horn alert from czech republic in may 2006!this may be a alert or horn that’s because this an old audio i recorded with my old camera i buy in january 2005! this may be a horn alerts in random cities and towns wile i record this in railways and signals!.