Lost is an American television series. the stroy centers around/fouses on the life and experiences of the 48 survivors of the plane crash of Oceanic Airlines Flight 815,from Sydney, Australia to Los Angeles, USA, which leaved the surviving passengers on a deserted tropical island in south pacific .Starting with a professional doctor—— Jack's view, the story tells us . how Jack saved the dying people's lives in a poor medical condition.By helping others win the war of survival, Jack became a hero, However, even heroes have secrets. 向专业翻译进军,你可以参考这个网页 http://en.wikipedia.org/wiki/Lost_(TV_series)