Complex sentence: Year 344 BC was a year of the pre-Julian Roman calendar.In the Roman Empire it was known as the Year of the Consulship of Rutilus and Torquatus (or, less frequently, year 410 "Ab urbe condita").
Split into simpler sentences: Year 344 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Rutilus and Torquatus (or, less frequently, year 410 "Ab urbe condita").