The phonetic transcription of "bertolino" is /bɜrtə'linəʊ/. The spelling of this word reflects its Italian origin, with the use of the letter "o" at the end instead of the English "-ow" sound. The consonants "b", "r", and "t" are pronounced as expected in English, while the "l" sound is elongated in the Italian pronunciation. The stress is on the second-to-last syllable, and the final "o" sound is pronounced with a short "oh" sound.