世The world. Also refers to 30 years. During a person's life. A lifetime. The period of time before a person inherits a position from his parents and passes it on to his children. To pass on from generation to generation. A period of time. The world. Society.
斗Ladle. A tool with a handle for scooping water or alcohol. A square for measuring the amount of grain, liquid, etc. A unit of capacity, 1斗 is about 18 liters. The name of a constellation, such as the Big Dipper or the South Star. Small. The name of a constellation. Suddenly.
士"Male. Adult male. A learned and respectable man. A beautiful name for a man. A man who excels in learning and knowledge. A man with a title. A samurai. A military man. A man who has acquired special qualifications or skills. To perform a task. To serve."
乃In other words. For that reason. So. A long time ago. In the past. You. A second-person pronoun for a person of equal or inferior status. The word for "no" is used in particles.