"人生道路的轨迹" can be translated into English as "the trajectory of one's life path" or more simply "the course of one's life".
"The trajectory of one's life path" emphasizes the directional and developmental aspect of one's life journey, similar to the path a projectile follows.
"The course of one's life" is a more common and concise expression, referring to the sequence of events and experiences that shape a person's life.
Both expressions are appropriate depending on the context and the desired level of detail.