The word "布拉格" is formed through a process of phonetic transliteration, specifically to represent the sound of a foreign proper noun. It is created by selecting existing Chinese characters whose pronunciations, when combined, closely approximate the syllables of the source name, in this case, "Prague". The characters 布 (bù), 拉 (lā), and 格 (gé) are chosen not for their individual meanings, but purely for their sounds, which together mimic "Pra-gue", resulting in a recognizable Chinese phonetic counterpart for the capital city of the Czech Republic.