stand someone in good stead idiom
（经历）对（某人）很有用，对（某人）大有好处
If an experience stands a person in good stead, it is or will be of great use to them.
Getting some work experience now will stand you in good stead (for) when you apply for a permanent job. 现在积累些工作经验，等到申请固定职位时会大有裨益。