"作为毕生职业的"可以翻译为 "as a lifelong career" 或 "serving as a lifelong profession"。例如：
* He pursued painting as a lifelong career.（他把绘画作为毕生职业来追求。）
* She has dedicated herself to teaching, serving as a lifelong profession.（她投身于教育事业，将其作为毕生职业。）