The spelling of "urbina" can be explained using IPA phonetic transcription. The word is pronounced as /ɜrˈbiːnə/, with the stressed syllable being "bi". The sound represented by "r" is a dental, voiced fricative /ð/, while "b" represents a bilabial plosive /b/. The rest of the letters, "i" and "n", have their usual phonetic values. Overall, the spelling of "urbina" reflects the pronunciation of the word, making it easy to correctly spell and pronounce.