"Pursuit" is the last stage of learning, that is, since you have learned something, you must work hard to implement what you have learned, so that you can finally implement what you have learned and achieve "unity of knowledge and action". "Dedication" means loyalty, firmness, singleness and perseverance. Only people with clear goals and firm will can truly "persevere".
extended meaning
Persistence mainly describes that a person needs to constantly improve his ability and accomplishment and pay attention to practice. Only in this way can he achieve his goal, live up to his youth and achieve the above perseverance.
You can live up to your youth. When you are young, you should focus on learning and pay attention to your behavior. Knowing without doing is not knowing.